Import AD groups into GRC

We are currently on GRC10.1. I would like to be able to import Groups from Active Directory in order to map the AD groups to our BW roles. I have tried a Role Import in the NWBC; but I do not have the Application or Landscape to select LDAP. We have not connected any external applications to GRC other than the LDAP Connector for AD. We have assigned the ROLMG integration sceanrio to the LDAP connector.. Please, assist urgently!!!!