Requeuing when using Round Robin (Logged In) queue

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We are about to implement a queue that distributes incidents using the "Round Robin (Logged In)" method, for the first time.  For those that have used this type of queue before, what's the best practice for an agent who is nearing the end of their shift and wants to reassign work back into the queue?  If they just change the incident assignment to "No Value", they will get the same records assigned right back to them.  Is there another way to accomplish this?

Thanks,
Mike Morris