If a participant has registered but still not paid then you can send them a payment request from within the admin area.
Firstly navigate to the 'Programming' module, and select a Program, in this case we will use the 'USTA Team Challenge' program:
Select the correct event:
The next screen will be a list of sessions for the event, in this example there is only one session:
Once selected you will be taken to a list of participants who have registered for the event. The players can be viewed under different categories. The first view lists all 'Active' players, you can then select 'Paid', 'Unpaid' or 'Cancelled':
Select the player that you would like to request payment from, you now have the option to select the payment icon above the name headings:
The following overlay will show you the email that will be sent to the contact.
The recipient will be the main contacts details used to register the account, the first name and full cost are also automatically picked up from the contact details.
You do have the option to type in any additional text that you wish to include in the email in the text dialog box above. All other text in the email can not be edited.