Membership + required Link

Hi,

I’m currently looking for the following:

I would like to offer an event where participants have to register but to do so – they have to go to a specific link (it is a form/test) and have to do that first in order to register for the event.

Is this possible in any way? It would like to use a form but I guess this is to challenging, right?

I would highly appriciate any suggestions.