Registration via Tickets

Dear Community,

we use a registration platform through which our participants register and pay. We would now like to use Zoom Event. Can we import a list of the participants who have already registered via our platform or send them a free Zoom Event ticket directly? Can latecomers also be added later? How can we generate these Zoom Event tickets and what do they look like? Or do the participants have to register again at Zoom Event with all their data in order to receive a free ticket?

Thank you.

Daniela