At the moment, I am able to double book my staff on two different activities at the same time. This is not possible in this field of work, and so I was wondering if there was a way to get around it that isn't manually confirming/denying the booking.  I am not able to double book a service at the same time with the same worker, and I was hoping the same could apply for the worker too.  Any help on the matter would be most appreciated.