To checkout multiple clients, Take the main paying client through to the checkout screen.
Click the Group Checkout button on the right hand side of the screen.
A drop down menu will appear with the names of other clients who have appointments on the day
Choose the name of the Client you wish to group the appointment with the client selected.
Click Yes to Add the clients services to the current sale.
There services will now appear in the checkout and are grouped for payment through the Pos.