I want to organize events where the members can register and also add additional products, like roadbooks, dinners etc.

How can I set this up in Odoo 17.0?

I have added tickets and also added options or alternative products to the ticket. When I however click the register button on the website then it asks me the nr of tickets, the additional questions and proceed to the payment page. (If there is a price for the ticket)

But I was not able to add the optional products to the event registration.