Add the possibility to put several prices depending on the option chosen

I would like to be able to adjust my prices according to various criteria by using FluentCart as a payment solution when creating an event.

Imagine the following situation, a person comes during a specific event. The event offers active people and others who are just watching. The prices charged are not the same depending on the situation. There would be a price for active people, and another for those who are passive.

In addition, the product related to the event must not be public in the shop, but private! This would not allow anyone to buy a ticket without going through booking and to actually short-circuit the registration.