Add call waiting to call queues Merged

I have two receptionists in a call queue but if they are both on the phone a call only goes to a waitlist and waits for an available user resulting in missed calls if they don't get off the phone quick enough. Having people in a call queue that can handle 3-4 calls at any given time is a must for a receptionist position. You have this ability for individual users why not for users in a queue?