What happens when an annual subscription renews?
 

I have a forum that requires a paid annual subscription. Once they pay, I manually changed their permissions to allow access. It is not done automatically, because only certain corporate people are allowed on our site and I have to verify them in our corporate address book first.

When the subscription runs out in a year, do they receive some type of automatice notice that allows them to pay for another years subscription and maintain their current permissions? Will it direct them to pay via the same method (paypal in this case) as was previously used? What is the process of renewal?

The forum has only been running for 4 months, so I hoping someone can tell me what to expect.