If you have scheduled the meeting – then go to:

• Scheduling Assistant

• Add Rooms…

Add the meeting rooms and then see which ones haven’t booked that room.

Go back to “Add Rooms…” and remove the rooms that you don’t want to use

If it isn’t a meeting that you scheduled yourself. You have to create a new meeting at the same time as the one you want to book the room for. Then do the same thing. Only problem is that other attendees won’t know where it is being held.