[torqueusers] How to prevent users from submitting to a queue?

[Bill Wichser]

I'd like to force jobs to pass through a routing queue and have that 
routing queue pick the right queue into which to place the jobs.

Is there any way to prevent users from declaring a queue themselves thus 
bypassing any of the routing which is in place, at least for a few of 
the queues defined?

Thanks,
Bill