Missing Room

I'm trying to add a room to my system.  In order for myserver to create a room activation macro, I need to add a source to this room however the room doesn't appear on the Sources & Apps by Room matrix for me to do this.  Is there another way to add a source to a room?

I just did this.

Go to drivers and configure an exiting device.  Change the room assignment to the new room.  This will cause the room activation macro to be created.

At this point, the device is actually assigned to both rooms.  Now go to Sources & Apps by Room and put the device in the room you want it in.

Thanks, that's all it was.  I think it's the wording on the room creation page that was throwing me off.  It says that room activation macros will be created when a source is added to a room.  In the driver, you're actually adding a room to a source