> For the complete documentation index, see [llms.txt](https://docs.greytrix.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.greytrix.com/sage-crm-add-ons/crm-resource-planner/installation-+-setup/custom-right-click-calendar-context-menu.md).
# Custom Right-Click Calendar Context Menu
Resource Planner allows administrators to customize the **right-click context menu** displayed within the Resource Planner calendar. This menu provides quick access to actions that can be performed on a calendar entry or an empty calendar space. Custom menu items can be added to support organization-specific requirements.
#### Adding a Custom Context Menu Item
To add a custom right-click menu option:
1. Navigate to **Administration → Advanced Customization → System Menus**.
2. Locate and open the **RP\_CustContextMenu** menu.
3. Add the required menu item.
4. Set the action to **Custom File**.
5. Specify the callback function that will handle the custom action.
For the custom menu item to function correctly, it must be linked to the **RP\_CustContextMenuCallbacks.js** file. The corresponding JavaScript function must also be implemented within this file to execute the required action when the menu item is selected.
#### Example
The documentation includes an example where a custom menu item named **Hello World** is created.
In this example:
* The menu item is named **Hello World**.
* The action type is set to **Custom File**.
* The custom file is specified as **helloworld**.
* A corresponding function is implemented in **RP\_CustContextMenuCallbacks.js** to handle the menu action.
This approach allows developers to extend the Resource Planner calendar by adding custom actions that integrate with their organization's business processes.
### Custom Right-Click Functions – `RP_CustContextMenuCallbacks.js`
All custom functions used by the Resource Planner **right-click context menu** must be defined in the **RP\_CustContextMenuCallbacks.js** file.
This file is located in:
`/CustomPages/Enbu/ResourcePlanner`
Each custom menu item created in **RP\_CustContextMenu** must have a corresponding JavaScript function with the same name defined in this file. When the menu item is selected, the associated function is executed.
#### Example
In the previous section, a custom context menu item named **Hello World** was created with the custom file name **helloworld**.
To implement this menu item:
1. Open the **RP\_CustContextMenuCallbacks.js** file.
2. Create a function named **helloworld**.
3. Add the required JavaScript logic inside the function.
In the example provided, a simple JavaScript **alert** statement is used to display a message when the menu item is selected.
#### Testing the Custom Function
After saving the JavaScript function:
1. Open the **Resource Planner**.
2. Right-click anywhere within the Resource Planner grid.
3. Select the **Hello World** menu option.
If the function has been implemented correctly, the configured JavaScript alert message is displayed, confirming that the custom context menu item is working successfully.
