smart complete all groups / networks from the same list; so you can create 1 group "us-east" networked to "us-west, emea" then the 2nd broker you create can smart complete the group to any of those 3 groups; plus adding networks explicitly filters out your currentn group. so an "us-east" group broker can only network to "us-west" or "emea". Though we allow creating new group names in the network section; so you can network to broker groups that don't yet exist