MagicSpam Premium - Now what?

I just picked up a license for MagicSpam premium for my server. I have no idea what to do with it now. There are no guides or anything that I can find. As far as I can tell, it appears to be running. Although now greylisting is magically turned on. In the past this has always slowed me down. Should i leave it on?

As far as MagicSpam, should i leave it running with Spamassassin?

How do i configure magicspam? There seems to be no way to flag a message as spam after it comes in, so how do you...

MagicSpam Premium - Now what?