Affiliate and prosites

To whom it may concern,

I have activated the affiliate plugin to work with prosites.

In the prosite affiliate options, there are options for 1-month payout, three months and a year. my questions are:

1. If I choose monthly will this pay out every month? I would prefer if it was
2. I have different prosite levels I want a different commission amount for each one can this be done?

Also, I want people to be able to sign up as an affiliate but they don't need a prosite to do this. How can I give them the option to sign up as an affiliate into the site rather than for a service?

Kind regards