Affliate Plug-in -Marketpress option

Happy Friday !

We are using marketpress in a multi-site - membership site, Do you have any documentation specifically for using it with-in Marketpress. I see once it is activated you can set the commission in the store settings.
But is there any of the reporting functions available ?
How about the ability to change the commission levels by product ? not globally across the member's site..

Thank you!