At the top right of the checkout page, you will see a section called “Add Another Client”. Just click on it and start typing the name of the client you want to add to the bill:

Search and click on the client you would like to add.

The client will be added underneath the first, and you will then need to add the services they had by searching for them in the services box, or it will automatically pull the booking info from the calendar if the client has a booking for that day.

Remember to edit the stylist to match who performed their service by clicking on "search stylist" and searching for the stylist who saw your second client. This is important for correctly allocating staff commissions:

Then continue to complete checkout as usual by clicking Pay by Card or Cash.