In the checkout screen you should be able to edit a service just like you can add a product, and this should be available without changing the booking. What they were booked for is what they were booked for what they were checked out for should have nothing to do with the books or how they appear AFTER the services has ended. The way it is now adds those services to the books in random places and/or just makes the whole appointment disappear and this causes a whole different set of problems for us. There should be a drop-down box in the checkout screen to add a service just as you can add a product. There is no reason why we should have to edit an appointment in a separate screen to check someone out. This allows for delays with the client at checkout and issues with the books. The services have already occurred, and they should be considered additional services that are not part of the originally booked appointment. I know there is a pop-up box that was added where you can add additional services on, but this isn't efficient when needing to edit multiple services within an appointment.