You cannot only add a role and assign them permissions, but you can also edit existing roles and customize permissions.
For example, you may want to assign more responsibilities to a user, or you want to revoke some permissions. Whatever the case, you can edit role permissions.
To edit role permissions, follow these steps:
1. To access the Roles page, navigate to the Administration → Roles menu.
2. You will see a list of existing roles. Go to the role you want to edit. Click on the Actions button and select Edit.
3. A dialogue box will appear. Select the Permissions tab. To assign permission, tick a checkbox. To revoke a permission, uncheck the checkbox.
4. Once done, click on Save.