To edit a role after it has been created:
Built-in roles, such as Agent, Project Administrator, etc. can be edited, with one exception (see the note below). This affects all users in the project who have that role. If you have not configured roles and you want to change permissions for all existing Agents, you can easily edit the properties of the Agent role. If you plan to assign different permissions to different groups of users, it is recommended that you leave the built-in roles unedited for future reference.
Note
The System Administrator role cannot be edited or deleted; the permissions are displayed for reference only.
To keep a system role constant throughout all projects, it should only be edited by the System Administrator on the System Administration User Roles page. A linked role can be edited by the Project Administrator from the Project Administration User Roles page, but this unlinks the role from the system.
To edit a system role from the Project Administration screen, and thereby unlink it:
To re-institute the system role properties, edit the role again from the Project and select the option to Discard this role's properties and link it to the System Default Role.
To edit a system role in a way that will affect all projects, edit the role from the System Administration User Roles page.
Note
This applies to both built-in and custom roles.