The multiple campuses feature allows you to organize who has access to your directory. If you have multiple campuses, Adjace will have a section in "Include These People" for you to decide which campuses are in your directory.
In this church, the administrator only includes members and regular attendees of their Main Campus. In total, there will only be 12 in the directory even though 16 were selected from membership types. This allows you to decide who is accessing your directory even further!