asterisk users - Jul 2006 - Calls waiting announcement with two or more queues?

Hi,

I'm wondering how the "calls waiting" announcement works when you
have
several queues? We have different people answering different kind of
calls and we have three queues setup because of this...

If I where to use "queue-callswaiting" - how would it behave? Would it
only prompt the caller the number of callers in the *current* queue? If
yes, is it possible for asterisk to calculate on a group of queues?

Regards,
Jan