The reason that there’s no response to Joseph is because he submitted a ticket with the same question.
This is what I said:
What happens is people can click on the “purchase ticket” and this will go into their cart. They’ll be added to the event as “RSVP’d without paying” until they purchase the ticket in their cart. When you go to the “view payments” it’ll show them as RSVP’d without paying and you can charge them, or remove them from the event (if they never pay for the item in their cart).
In order to see who has paid for the event or not, and thus prevent them from slipping through the cracks, you can click on the event, then “details”. This will take you to the event page. There you can click on “attendance” and “view all payments”.