Role Operators Tab
The Operators tab of the Roles window allows you to associate specific local or LDAP-defined users with the given role.
Click the Assign User button to bring up the list of currently unassigned users. You can delete users from this role by selecting their names and clicking Remove User.
Make sure to click Save Changes before you dismiss this window.
This dialog is presented when you select a role from the Roles list or when you create a role from scratch with Tools > Create Role.