Red Hat Portal Permissions

Maybe I am missing something as I am relatively new to this process. Some of our users have registered systems that did not end up in groups...they are sort of orphaned. They cannot see those registered systems and I am told that they need to have either System Group Admin or Org Admin persmissions. These permissions provide far more access than the user needs and creates a security concern. Is there some way that a user can have access and control over the systems they register without giving them access to everything?

Daren