Launching a website, there are 4 services on offer but only one worker. So If the worker is doing one service eg a make up appointment she would not be able to do a spray tan at the same time but it is still showing available to book both.    EG tomorrow 9am Make up appointment till 10:30. The website will not let anyone book another make up appointment in that time but would allow a spray tan or make up lesson to work. How can we get it so that it blocks out all services in that time frame?    Thanks