If you don't know the exact attribute string you'd find it very easily...
- open the NAC Manager Java app
- go to advanced config
- select the LDAP server
- click on Test
- User Search and put in the username and click Search
In the output you'd see the full attribute string - copy/paste that in the XOS Admin Group.
![0cdc4b11e46f473aa59f897d1fc4e706_RackMultipart20180503-32096-9pl503-EMC_LDAP_memberof_inline.png 0cdc4b11e46f473aa59f897d1fc4e706_RackMultipart20180503-32096-9pl503-EMC_LDAP_memberof_inline.png](/t5/image/serverpage/image-id/4634i4BE6E60002DA326C/image-size/large?v=v2&px=999)