Please allow a 'call-waiting' option in simultaneous queues Merged

Please allow call queues configured for simultaneous ringing to have call-waiting, as in, allow a user currently on a call to see the next incoming call and determine what to do with it. Particularly in short staff or busy situations it is preferable for a queue member to be able to be able to field/re-route multiple calls simultaneously. We currently get around this limitation by using Ring Groups, but unfortunately they're limited in terms of which devices can actually ring.