In the Event Type Management page, check the box for "Has Event Roster" and if you would like to charge these customers a fee, start typing in the product name so that it auto fills in the "Registration Product" field.

Next, go to your calendar page and add your new event type. Once the event is created, you can begin to add customers to the roster by selecting roster on the left hand side. You can click "add to roster" to search and add a customer in the system.

You will then be asked to search for the customer in the database. If you have a product attached to charge the customer, you will see a check box asking if you would like to proceed to checkout. Otherwise, it will add the customer to the roster without payment.

Once a payment has been made, they will appear on the roster as paid. If they have not paid, you can click the "pay" button and take a payment at any time. You can also drop unpaid customers from the roster.