Limit which user roles can modify the Reasons for Closure or Root Causes when closing tickets.

Unless otherwise specified, ticket users cannot modify the lists provided in the Explain & Close window when closing tickets:

To modify action permissions:

1. From the top, right corner of the platform, click Settings .
2. From the left navigation, click Roles.
3. Click the Edit icon next to the role you want to modify.
4. Choose the permissions to enable under the Actions > Managing.
   
5. Click Save.

Now this user can add or edit items in the related drop-down(s) (found on the Admin > Actions Others tab).