You're kidding me right?
So when I say 'All reds AFK freeze on the yellow line' they do that. Then their AFK timer counts down, and the only way for them to stop the timer it is the move, but if they move they'll be rebelling. If they let the timer run it's course, they'll get kicked off the server.
Not a good idea, you see what I mean?
I think what you're looking for is something to kick out the spectators. Dunno what possibilities is that, I'm sure there's one but I've never seen panda use it.
There's always the meanwhile stuff, get donor or get an admin to kick definite AFKs (when server is full) or get admin yourself (best reason to get admin 10 10).