Grand Prix Rejects

What's confusing to me is how these fictitious championships work. All I'd really need is just a very quick run down like what games are used...if I'm allowed to enter as 'manager' or as a 'driver' etcera..Basically how to enter one. That's all.

Hello. I'm new as a poster, but not as a reader. I have a question or two but I'm not really certain about where to ask them.