Add and Map a Local User Group to an External Domain User Group
Use this task to allow the external domain user belonging to the external domain user group to inherit the group-based authorization privileges of the local user group.
The external domain user is authenticated by a domain server, such as a RADIUS server or Active Directory domain controller. You must map the external domain user group to the local (internal) user group that was created for this purpose.
See the Find an External Domain User Group section for more information about finding the external domain user group name that you need for this task.