Setting Open Directory Administrators to be admins to other Directories

Background: I have an open directory system with one open directory master, and two replicas. We connect our various sites into the open directory system, then we upgrade the local sites to be their own open directory masters. In directory access on the local servers the authentication order is set as: /Netinfo/DefaultLocalNode /LDAPv3/127.0.0.1 /LDAPv3/odmaster The directory administrators on the odmaster are able to administrate the odmaster domain. The directory administrators on the local servers can admin those local directories. We need the upper admins to be recognized as admins of the lower directory servers. Anyone know the best method to do this or know where to point me for some good documentation? Thanks