If your event allows reservations, participants can book their services and pay the fee at a later date. In this case the booking and awaiting payments of the participants will be displayed under the Awaiting Payment section.
In Awaiting Payments, you can create Pro-forma invoices or add manual payments for the services participant booked.
To create Pro-forma invoices click on "Create Pro-forma Invoices" button and a pop-up will open then you need to select service booking to create the Pro-forma invoice.
If you want to change the billing information for the participant, you can click YES to Do you want to change billing information? question and then you can edit the billing information of the participants.