We have 3.1 installed and have boarded some coworkers from IT.

We have an SSID available in the office for guests.
I've deployed a new hidden SSID for ZMM enabled devices to use and would like to prevent ZMM devices from connecting to the guest APs.

I've been poking around the dashboard and haven't seen anything that would allow this blacklist type functionality.
I supposed I could use ZMM to populate that guest SSID with bad info but I was hoping for something a bit cleaner.