The client interface is the main view of Tibia during the game. Some windows of the general layout can be moved around (minimap, inventory, status bars and buttons) or modified in size (game window, console). Moreover, you can open sidebars in which you can place all kind of containers as well as all moveable windows. You can open as many sidebars as you like provided you have enough space. You can always switch positions of the certain elements by simply pulling the window or container in a different sidebar. The client will remember the position of your opened backpacks and windows in the sidebars. If you log out or close the client and log in again, all of your opened sidebar windows are going to be restored to the same position and size.
If you log in from another computer with different sidebar settings, lower display resolution etc. the position and number of opened windows might vary.
3.1 Game Window
The game window takes up the main part of the interface. Almost all game play takes place on this window - you will see other characters moving about, approaching monsters, items on the floor and, of course, the surrounding countryside. Your character will always be in the centre of the game window.
It is possible to modify the size of the game window. If you do so, the console
will increase or decrease in size accordingly. To change the size of the game window left-click on the top bar of the console and move your mouse up or down, keeping the left mouse button pressed. The more additional sidebars you like to open up, the smaller needs to be your game window.
Similar to a radar screen, the minimap shows a bird's-eye view of your surroundings. It is essentially a miniature version of the game window, although it covers a much wider area. Like the game window, the minimap is centred on your character, which is shown as a black or white cross, and just like in the game window, you can move your character by left-clicking on a spot on the minimap. There are 2 important differences to the game window, however. Firstly, unexplored areas in the minimap are covered by black fog that keeps you from seeing what might be hidden there. Secondly, it is possible to mark places of interest on the minimap. To set a mark right-click onto a spot on the map and select "Set Mark" from the context menu. If there is already a mark on the selected spot you can choose to edit or to delete it. If you set or edit a mark you can select an icon of your choice and enter a short description. You can also ask certain NPCs to mark your map with important places, such as depot, bank or shops.
To the right of the minimap you can see a compass rose as well as a number of buttons. These icons are designed to scroll the minimap in all directions, including higher and lower floors.
3.2.2 Cyclopedia Map
- Compass Rose
Clicking on the various points of the compass rose will move the minimap in the desired direction. Alternatively, you can use a key combination of Alt + cursor keys to scroll the minimap. Similar to the "Centre" button, a click on the centre of the compass rose will re-centre your minimap.
Moreover, if you are playing without light effects, you can always check there whether it is day or night in Tibia.
- Magnifying Glasses
As might be expected, clicking on the magnifying glasses will modify the minimap's zoom factor. The icon at the top serves to zoom out of the map, while a click on the magnifying glass at the bottom will increase the zoom factor.
As with all movements of the minimap there are shortcuts for modifying the minimap zoom factor: Alt+Home will zoom out, while Alt+End will increase the zoom factor.
- Level Selector
In addition to the immediate surroundings the minimap also shows the maps of floors that are situated above or below your character's current position, provided there are such floors. Use the slider to switch the map to upper or lower floors. The corresponding shortcuts are Alt+PageUp and Alt+PageDown, respectively.
Clicking on this button opens the Cyclopedia Map, which provides not only a large and detailed map of Tibia, but also many helpful features and exciting tasks.
- Display: Here you can select which marks you would like to see on the map, you can choose single marks or all marks. If you have already discovered an area, you can also show passages and NPCs of this area on the map.
- Views: You can choose between two different display modes. The surface view provides an in-game graphic display of Tibia's surface and all floors above. The map view provides the classic minimap view. Floors that are situated below Tibia's surface will always be displayed in the Map View.
Use the level separator to display several levels at once, however, this will only work if you are on or if you have selected a floor which is at least one level above ground.
- Navigation: Similar to the minimap, you can here scroll through the map using the compass rose, the magnifying glasses as well as the level selector. Alternatively, you can also use your mouse to move the map and to scroll-in or scroll-out.
To move your character, left-click on a spot on the minimap. Note, however, that you can only move your character to a spot on the same level and only if it is reachable from your starting point.
Point of Interest
- Discover Areas and Subareas: Many areas and subareas can be discovered. If you click on the map, the selected subarea will light up and an additional box opens up in the left column. There you see the area to which this subarea belongs as well as the percentage you have already discovered of an area. To discover a subarea, click on "Start Discovering". Note that you can only discover one subarea at a time. Once you have started, several points of interest will be set randomly in the selected subarea. Note that these points are different for each character and can even be reset if needed. This means, however, they cannot be seen by other characters.
As soon as you have found seven points of interest, this subarea has been discovered. How many subareas belong to an area varies for each area.
Once you have fully discovered enough subareas, you will unlock new useful functions of the Cyclopedia Map:
- If you have fully discovered at least 30% of all subareas of an area, locations of NPCs within that respective area can be shown on the map.
- At a minimum of 70%, passages to subareas on other map layers and teleports can be displayed as stair symbols on the map.
- Once all subareas of an area have been discovered, creatures that occur in those subareas are listed when you click on a subarea's name or on a passages symbol that leads to this subarea. Creatures for which the Bestiary entry has not yet been unlocked are displayed as a silhouette.
- In addition, a character who has completed an area will be notified whenever a raid is about to take place in that area within the next hour.
- You might want to pay a visit to NPC Charos from time to time since characters who have completely discovered 10 areas can look forward to a new outfit. Discovering 15 and 20 areas unlocks the first and second addons respectively.
- Improved Respawn Rate: Every day at server save, one area will be selected randomly, in which creatures spawn at a faster rate at this day. In addition, a second area can be selected by the players of a game world. All they have to do is donate gold for their desired area. If the required minimum amount has been reached at server save, also for this area an improved respawn rate is active for this day. If more than one area has reached the required minimum amount, the improved respawn rate will be activated for the area with the highest amount of donated gold. If two or more areas have reached the required minimum amount and they all hold the same amount of gold, which is also the highest amount, the winner is chosen randomly. The gold of the winning area will be reset to 0, while the other areas keep the collected gold. So they stand a good chance to win one of the following days.
3.3 Status Bars
These two bars show the condition of your characters' most important attributes: their health (red) and their mana, i.e. their magical energy (blue). The bars will show the current state of these attributes in relation to their respective maximums, while the numbers behind the bars will show the actual amount of hit points and mana points your character has.
There are several ways to restore hit points and mana points. For details please see the manual section on characters
Players can choose whether they would like to have their status bars displayed in the rightmost sidebar or on one of the sides of your game window. You can also choose to display both options or none of them. You can enable or disable your status bars via Options -> Interface -> HUD, or by clicking on one of the status bars and selecting or deselecting the respective feature.
What is more, the status bars around the game window are customisable. In addition to mana and health points, you can also choose to display your level, magic level and one, several or all available skills. Moreover, you cannot only select the position around the game window at which the status bars are displayed but also choose between different styles.
This part of the interface shows your characters' equipment. You will see a portrait of the active character's body, split up into a number of individual slots. These slots represent the locations where items can be equipped - there is one slot for your character's head, one for the torso, 1 for the hand that can hold a weapon etc. To equip an item simply move it into the slot it is intended for.
Please note that items can only be placed in the slots they are designed for. For example, you cannot place a sword in your character's head slot. Further, some items require a certain vocation e.g. a heavy golden armor can only be used by a strong knight or paladin, while only sorcerers and druids have the magic ability that is needed to carry a witch hat. If you feel you don't need to see your inventory for a while, you can minimise it by clicking on the button in the top left hand corner.
3.4.1 Body Slots
3.4.2 Blessings Dialog
- Armor Slots: These 4 slots cover your character's feet, legs, torso and head. They are reserved for clothing and armor.
- Weapon Slot: This slot is reserved for all kind of weapons such as a sword, an axe or a bow, but also a rod or a wand, or even a snowball. Note that certain weapons require a minimum level or a certain vocation.
- Shield Slot: In this slot you can carry a shield, or a spellbook provided you are a sorcerer or druid. Note, however, that you cannot carry something in this slot if you are using a 2-handed weapon.
- Amulet Slot: You can place a necklace or an amulet in this slot.
- Ring Slot: This slot is reserved for rings.
- Container Slot: You can place containers such as bags or backpacks in this slot. Moreover, you can open the function Manage Loot Containers from the context menu for containers from here.
- Extra Slot: This slot can be used to store items which you need to have close at hand, more precisely ammunition and light sources. It is no coincidence there is an arrow symbol in this slot - if you are using a bow or a crossbow, you have to place your ammunition here. On the other hand, if you are using a melee weapon and a shield, this is a great place to equip a torch.
Clicking on this little ankh
, opens the Blessings dialog. Here you can see by which blessings
your character is protected. Moreover, you have the option to go right to the Store to purchase missing blessings. You can also check how blessings and a possible promotion or Premium status influence the penalty for your next death. If you click on "History", you can check when and where you gained a certain blessing and for which death it has been used up.
3.4.3 Store Inbox
- If the little ankh is displayed in grey, your character is not protected by any blessing.
- If the little ankh is displayed in green, your character is protected by all available regular blessings and the PvP blessing "Twist of Fate" provided it is available on the character's game world.
- If the ankh is displayed in yellow, your character is protected by at least one blessing. If your inventory is additionally displayed in yellow, your character is protected by the Adventurer's blessing. However, this blessing is only available on Open PvP game worlds. If your character dies in a PvP fight being protected by this blessing, your character will not lose any items, experience and skill points. But beware! As soon as your character attacks another character first or reaches level 21 for the first time, the blessing will be lost for good. Then your inventory will be displayed normally in grey.
All portable items you have bought in the Store
(e.g. potions, runes, decoration items) will be sent to your Store inbox. Note that all items purchased in the Store can only be used by the character that purchased them. Also, if your character has purchased furniture or decoration in the Store, it can only be unwrapped in a house owned by this character. So always make sure that you buy the items with the correct character.
You can open the Store inbox wherever you are. It comes in particularly handy when you are on a long hunt on a deserted island and you are running out of potions. Without the hassle to travel all the way back, you can simply buy new potions in the Store and receive them right away in your Store inbox. Note, however, that you cannot purchase potions or runes while your character has a protection zone block or a battle sign.
In addition to these body slots there are three further fields at the bottom of your character's portrait. It is not possible to place items there. Instead, these small fields will give you additional information about your character:
3.4.5 Store Button
- Soul Point Indicator
The field in the bottom left hand corner shows your amount of soul points. Characters have a maximum of 100 soul points while promoted characters have a maximum amount of 200. Your amount of soul points is reduced whenever you cast a rune spell or certain other spells which are used to magically generate items such as ammunition or food. Soul points fill up if you receive experience points that equal or are above your character's level for killing one monster, or by sleeping in a bed.
- Capacity Indicator
The small field in the bottom right hand corner of the inventory shows your current capacity. If you try to pick up an item whose weight exceeds your capacity, you will receive an error message. You can check an item's weight by looking at it.
- Condition Indicator
The oblong field at the bottom of the inventory will tell you if your character is suffering from a special condition. The nature of the condition is indicated by a corresponding symbol. Special conditions include poisoning and burning as well as the logout block. For a comprehensive list of all special conditions please see the manual section on characters.
Finally, click this button to open the Store
. In the Store you can purchase a wide range of awesome Tibia products for Tibia Coins
3.5 Combat Controls
To the right of the inventory you can see a set of 6 upper buttons. If expert mode is enabled 4 further button will appear beneath the Secure Mode button.
3.5.1 Combat Mode
The three upper buttons to the left serve to set the combat mode. How daring do you want your character to be?
3.5.2 Combat Movement
Characters that are set to offensive combat mode will storm into battle, concentrating all their skill on an all-out attack. Because of this, they receive a bonus to their attacks. However, the drawback of such reckless fighting is that a character's defence is reduced as long as he is set to offensive combat mode.
This is the default setting. A character that is set to balanced fighting will divide his skills evenly between attack and defence.
Defensive characters will try to protect themselves as well as possible. Characters can attack while they are set to defensive mode, but their chance to hit will be reduced.
The upper buttons to the right will determine your character's automatic movement during combat.
3.5.3 Expert Mode
|Stand While Fighting|
This is the default movement mode. Characters that are set to this mode will try to make a stand where they are. They will not budge unless they are pushed aside or until the player moves them manually.
Characters that are set to "Chase Opponent" will try to corner their opponents. Whenever a target is attacked such characters will try to move as close as possible towards it, taking the shortest way possible. If you are not happy about the way a character is moving, you can easily stop him by clicking on "Stand while fighting" or by moving him using the mouse or the cursor keys. However, note that if "Auto Chase Off" is disabled in the Options menu, your character will resume with the movement mode "Chase Opponent" once you take the finger from the cursor key.
Experienced players can use the Expert Mode to make further adjustments for PvP fights.
3.5.4 Secure Mode
With the third button you can turn the expert mode for combat on and off. If you enable expert mode, the following four buttons are displayed. Only one of these modes can be activated at a time:
This is the default setting. If the dove mode is activated, you can only attack or block characters if they have been aggressive towards yourself.
|White Hand Mode|
If the white hand mode is active, your character can only attack or block characters that have been aggressive towards yourself or a member of your party or guild.
|Yellow Hand Mode|
If you select the yellow hand mode, your character can attack or block all skulled characters. However, you are still unable to attack skulled characters that have joined the same party or guild like you.
|Red Fist Mode|
The red fist mode allows your characters to attack or block all characters, no matter if they have got a skull or not. Still, members of your party or guild cannot be attacked. Note that this mode is not available for characters with a black skull.
On hardcore PvP game worlds, the red fist mode is preset for all characters and cannot be changed.
The Secure Mode button below the six combat control buttons serves as a security switch to avoid unwanted attacks on other characters. You can use it to switch between secure and normal mode.
This is the default setting. Characters set to secure mode cannot attack other characters that are not marked by a skull. This way it is not possible to attack innocent bystanders or friends by accident. Note that you can always defend yourself against attacks in this mode because aggressors will be marked automatically. Also, keep in mind that the secure mode will not prevent that your character may get a skull mark if he causes damage, e.g. by fire fields or explosions.
If this mode is activated you can freely attack all other characters. Keep in mind, however, that your character will receive a skull mark if you attack unmarked characters.
Please note that the switch for secure and normal mode has no meaning on optional PvP or hardcore PvP game worlds. For details on Player vs. Player combat and on skull marks please see our section on player killing.
3.6 Control Buttons
In addition to the combat controls a number of further control buttons are arranged below the inventory and the combat controls.
The "Stop" button will cause your characters to stop whatever action they are currently taking. As a shortcut you can also hit the Escape key to stop your character.
Clicking on this button will show or hide all control buttons explained below:
A click on this button will open up a subwindow that will show you all you need to know about your character. Among other things, this list contains your character's experience, level, hit points, mana, magic level and skills. The character's current experience and skill levels are indicated by the numbers to the right, while the progress to the next level or skill advancement is indicated by little bars. To receive more detailed information on your progress in a skill, place the mouse pointer on the corresponding bar and wait for the tool tip to open. The tool tip will show your progress in per cent.
The tool tip for the experience points progress bar tells you how much experience points you still need for the next level. Furthermore, when you are hunting, you will get additional information there about how many experience points you make per hour and how much longer you need to hunt until you reach the next level. For a fairly correct result, you need to hunt for at least 15 minutes. If you stop hunting for 15 minutes, the experience counter will go down to 0. By right-clicking on the skill window, you can also choose to reset the experience counter.
Also, it is possible to hide specific or all bars in the skill window. To do so right-click on the window and select the bars you would like to hide. For details please see the manual section on characters
| 3.6.2 Battle List
Use this button to open the battle list. Here you will see a list of all characters and monsters that are currently within battle range. The list includes a miniature version of the character, his health status bar and possibly a skull mark. You will find the battle list is very useful because you can direct your attacks and even your spells through it.|
If you click on the arrow button , five symbols will appear on top of the battle list. Each symbol stands for a certain group: players, NPCs, monsters, non-skulled players and party members. For each group you can select if you like to show or hide its members in your battle list.
If you click on the list button on top, a further menu will open up. Here you can decide how to sort the creatures shown in your battle list by certain critera: display time, distance, hit points and name.
3.6.3 VIP List
Clicking on this button will open up the VIP list ("Very Important People"). You can add up to 20 characters to this list and Premium players even up to 100. This is a very useful feature, because by looking on the VIP list you will always know when your friends and enemies are online. For further information on the VIP list please see the section on player communication.
3.6.4 Quest Log
If you click on this button, your quest log will open up. Here you can check quests that your character has started or already completed. To find out more about this feature, read the section about the quest log.
3.6.5 Reward Wall
Clicking on this button will open your reward wall. Here you can pick up your daily reward provided you are standing next to a reward shrine or use an Instant Reward Access, which you can purchase in the Store. The daily reward can be picked up once between 2 server saves. Your reward will be sent to your Store inbox.
Further you can check here which resting area bonuses your character has earned. As long as you pick up your daily reward once every day between 2 regular server saves, your reward streak keeps rising. If you have reached a reward streak of at least 2, your character will benefit from bonuses in resting areas.
3.6.6 Spell List
Clicking on this button will open up your spell list. The spell list contains detailed information about all spells. You can define which spells should be displayed by selecting various criteria (e.g. vocation, learn spells or spell group).
3.6.7 Unjustified Points
Clicking on this button, opens a widget which offers you an overview of your unjustified kills, the remaining time of your red and black skulls as well as the number of open PvP situations you participated in. The fill level and the colour of the progress bars tell you how close you are to getting a skull. The more you have been involved in an unjustified kill, the faster the bars will fill.
Use this button to open up the prey window. If you have already selected a prey, you can check here which prey you have selected, which bonus you receive and the remaining time for the prey. By clicking on the prey window itself, a dialog will open up which allows you to select and activate up to three preys. Note that characters must have left Rookgaard or Dawnport to be able to activate a prey.|
This button opens the Compendium dialog. Here you can find short summaries of various Tibia topics, game features and content. This button will be highlighted whenever a new entry has been added.
If you click on this button, the Cyclopedia will open up. The Cyclopedia is divided into five sections: Items, Bestiary, Character, Charms and Map.
3.6.11 Analytics Selector
- Items: The items section provides you with information concerning every item which can be traded in the Market. Similar to the Market interface, items are sorted in different categories. Check here to find out in which city you can find NPCs buying or selling a certain item. Furthermore, you can inform yourself about the NPC prices for an item and the average Market price on your character's game world. Moreover, you can start the tracking of an item on this page. The result will be shown to you in the drop tracker, which can be found in the analytics selector.
All players that have selected the corresponding Option will have their loot marked with different colours in loot messages, containers and the Bestiary. The colour depends on the loot value, which can be determined in this section either by using the NPC buy value, the average Market price or, for Premium players, their own preferred value. The defined loot value for each item will also be used by the analytics selector to help you analysing the profit and waste of your hunting sessions.
What is more, players can determine here which items they want to loot or to skip when looting by clicking the box on the lower right-hand corner.
- Bestiary: With the exception of special boss and raid monsters, you can unlock information about all creatures in Tibia here. Creatures are sorted in different creature classes such as demons, mammals or plants. Initially, only the silhouette of a creature is displayed. To unlock an entry, you will have to kill its corresponding creature. The first kill will open the entry and reveal the creature’s name, sprite and difficulty level. The kill counter shows you the required amount of kills to unlock more information.
To successfully complete a creature entry, you will have to unlock a total of three stages.
The first stage will unlock basic information such as hit points, speed, armor and common loot items, for example. The second stage will allow you to see uncommon loot items, resistances as well as hunting spots for this creature. Once you have killed enough creatures to unlock the final stage, you can also see semi-rare and rare loot items. How often you have to kill a creature to unlock more of its details depends on the creature's difficulty.
Once you have unlocked a complete entry, you can also assign Charms to the creature.
- Character: Here you find all kind of information concerning your character. Of course you see your character's main figures such as experience, skills and combat stats. Further you can see here when and why characters have last died and which other characters they have defeated in PvP fights in the last 30 days. Finally, you can check all achievements in this section and see which one your character has already accomplished.
- Charms: In this section you will find information about bonus effects called Charms. Charms can be unlocked with Charm Points. Charms can only be assigned to a creature if you have completed the creature’s entry in the Bestiary. Further, Charms can only be used for one creature at a time. In addition, a creature cannot have assigned more than one Charm at a time. Characters on free accounts can have up to two Charms active, while characters on Premium accounts can have up to six unless you have purchased the Charm Expansion.
To remove a Charm from an entry, you need to pay a fee, which depends on your character’s level.
- Map: The Cyclopedia Map offers different views on Tibia's map. You do not only find details about the single areas and subareas here, but also great tasks for all explorers, who can even earn a new outfit this way. Moreover, players can donate gold here to improve the respawn rate of a certain area for one day. For details, you can read up on the Cyclopedia Map in the corresponding section.
Clicking on this button, you will find several functions which help you analyse your hunting sessions:
- Hunting Session Analyser: Here you find an overview of your last hunting session, including information such as duration, XP gain, XP/h, Loot, Killed Monsters etc.
- Loot Analyser: Displays information on total amount and type of looted items within the last hour, as well as the gold value of looted items based on NPC price, average Market price on your world or individually set prices.
- Supply Analyser: Displays information on total amount and type of supplied items within the last hour, as well as the gold value of supplied items based on NPC price, average Market price on your world or individually set prices.
- Impact Analyser: Learn here how much damage you have dealt.
- XP Analyser: Here you find information about the experience you have gained and how much you gain per hour.
- Drop Tracker: Use the Cyclopedia to track a certain item and check here how often it has dropped and from which monsters.
Click on this button to open the Tournament window. Purchase a ticket for an upcoming Tournament, check the current Tournament rules, scores and rewards, view the current Tournament leaderboards or get information about your Tournament characters.
3.6.13 Tournament Leaderboard
This button is only available on Tournament game worlds. If you play on a Tournament game world, you can click on it to open the Tournament leaderboard window. There click on the small list button to select whether you want to watch the scores of the top-ranked characters or of your own rank in real time.
Clicking on this button will open up the Options menu. This menu can also be opened via the title screen.
The Tibia client offers a large number of options and individual settings which allow you to customise the game to suit your personal gaming taste as well as possible. If you open the Options menu for the first time, only the most important settings are displayed. Click on "Show Advanced Options" at the bottom to get access to all available options. The single options are explained in texts that appear when you mouse over a button or the small information signs behind each option.
3.6.15 Leave the Game
To leave Tibia you should use this button. Unless your character is barred from logging out by a logout block clicking here will take you back to the title screen where your character list will be displayed, so you can easily log in again. The character list will close after 30 seconds due to security reasons if you do not log into the game again.
Even though it is possible to shut down the client anytime you should keep in mind that it is possible that your character will stay in the game due to the logout block. The same is possible if you get disconnected from the game server. Also, please note that characters log out automatically if they have been idle for sixteen minutes, i.e. if no action whatsoever is performed during this time. If a character has been idle for 15 minutes, a red message will be displayed which will warn players of the imminent logout.
The console is reserved for communication with other players. It consists of an area where all messages are logged as well as an entry line in which you can compose messages yourself. The console is usually set to the local chat channel in which you can talk to nearby characters. There are further channels available, though, which will allow you to chat with people who are far away or to NPCs. You can recognise these channels by the labelled tabs. To switch between channels use the "Tab" key or click on the tab of the channel you would like to use.
To read messages from two channels at once, you can drag one channel of your choice to the very right end of the console. Now a copy of this channel will display all messages that are written there. You cannot write in the copied channel, but you can of course send messages in this channel by using the original one on the left-hand side. If you close the original channel, also the copy will be shut.
Players on Optional PvP game worlds can use the symbol to determine which characters can use the spell Exiva to find out where their characters are located in the game. Players can allow whole groups to locate their characters, e.g. all guild members or all party members, or they can enter single character names as well as all members of a selected guild to use Exiva on them. Important: During a guild war, all members of the participating guilds are always able to use the spell Exiva on each other.
Further, click on the "No Entry" symbol in the top right hand corner of the console to open the ignore and white list. For further information on the console and on chatting in general please see the manual section on player communication.
3.8 Cooldown Bar
Right above the console, the cooldown bar is displayed. All spells and spell groups have a certain cooldown before they can be used again. In the cooldown bar, you can see how long you have to wait until you can use a certain spell or a spell of a certain spell group again.
When a spell has been cast, this spell and the spell groups it belongs to have a cooldown for a given amount of time. This time is displayed by a white line on the spell and the spell group icon. As the white line gets shorter, also the waiting time becomes shorter. Once the white line is gone, the spell icon vanishes, and the icons for the spell groups are greyed out again. Note that the cooldown for spell and spell groups do not necessarily have the same length.|
The icons for the 3 main spell groups - attack, healing and support- as well as the secondary spell group - special - are constantly displayed. Single spells are only shown while their cooldown lasts. The cooldown bar can also be hidden by unchecking the corresponding box in the General section under Options.
3.9 Action Bars
Every player can have up to two action bars with 50 action buttons per bar. For every hotkey preset, players can configure separate action bars. By right-clicking on an action button, you will have different options depending on whether you like to assign a spell, an object or a text, or if you like to assign a hotkey to an action button:
Assign Spell: A window will pop up in which you will find a list with spells. Select the spell you like to assign. Check the box below to show only spells which your character has already learnt. If a spell needs a certain parameter such as "up" or "down" or a character or creature name, you will be able to write it in the corresponding field. It is also possible to "drag&drop" a spell directly from your spell list to an action button.
If the lock is open, you can easily assign an item or a spell to an action button or switch an action to another action button using "drag&drop". Hotkeys are bound to an action button, so they will not be moved this way. Close the lock to avoid unintentional moving of actions, for example when hunting. If locked, you cannot assign or switch actions by "drag&drop". However, you can still assign actions via the context menu.
Assign Object: Use the crosshair to select the item you like to assign. Depending on the item, you can choose to equip or use it when using the assigned action button. If you assign objects like runes or potions, you can select whether you like to aim it at yourself, your current target or if you like to choose the target with crosshair.
Assign Text: If you enter text and select "Send Automatically", the entered text will appear right after using the action button. Otherwise, your text will only appear in the entry line and you need to click "Enter" to actually send the text.
Assign Hotkey: To use an action button very quickly, you can assign it to a hotkey. Simply click on the key or the key combination you like to use and then "Ok" to confirm your choice. There will be a warning in red if the key is already in use for another action.
Finally, you should check out the Options menu. There you have several options to adjust your action bars.