[otrs] How to display only sub-queues in Change queue

Hi, I would like to limit the list of queues that are visible in the Change queue drop down list. Specifically, is there a way to display only sub-queues of a given queue in the Change queue drop-down? If the above is possible, then how would I limt the queues in the Change queue drop-down to only the sub-queues of the current queue, plus the Junk queue? Thanks in advance, Akbar