Ldap attributes

I was wondering what is the proper way to enable ldap attributes in radius.conf for example Ldap-Group groupmembership_attribute = radiusGroupName will then other ldap attributes be matched in the same way? Ldap-Callingstationid callingstationid_attribute = radiusCallingStationId Ldap-Realm realm_attribute = radiusRealm etc etc.... Cant seem to find any documentaition about this! Maybe a chapther in your book Alan :) Best regards Johann B.