Requiring an item to be selected when booking an appointment

[hannahaus]

How do I require a client to select an item when they are booking an appointment? I want the client to have to select and pre-pay for both a service and an item on my calendar. 

[BernadetteA]

Welcome to the Community, @hannahaus

Have you had a chance to check out the setup guide for Customer Prepayments for Square Appointments? 

Let me know if you still have questions after taking a look at the link I posted. 😊