To manage permissions on Joomla, follow these steps:
1. Log in to the Joomla administrator dashboard.
2. Click on the “Users” menu item and select “Manage” from the dropdown.
3. Select the user group you want to manage permissions for.
4. Click on the “Permissions” tab.
5. Choose the component or module for which you want to manage permissions.
6. Configure the permissions for that component or module by checking or unchecking the appropriate boxes.
7. Save your changes.
You can repeat this process for each user group and component or module that you want to manage permissions for. It is important to regularly review and adjust permissions to ensure that users only have access to the areas of the site that they need to perform their tasks.