Create two top level OUs.Staff.Students.Move all "multiple" staff OUs into Staff.Move all Student OUs into Students.Define your Search Base in the plugin like:OU=All_Users,OU=Staff,DC=corp,DC=domain,DC=localnote: that this is probably not perfect,m you might not have an All Users OU for example. But since your specifying that next OU down it shouldn't search say OU=All_Users,OU=Students.