How do different users actually share revenue using Ad-Sharing?

Hello!
I've purchased Ad-Sharing and have easily added the plugin to my personal Wordpress site to test it out. The ads appear on each post and everything seems to work fine. However, my hope and goal was to create a website that allowed 4-6 authors the ability to use their own Google Adsense publisher ids to share revenue; much like how http://infobarrel.com or e-how works. Infobarrel gives a similar 75% revenue share to authors, which supply their own Adsense/Chitika numbers. Upon creating a test admin on my site, I can update the Advertising settings but this would only replace the current Adsense ID - not add another.

Is there a recommended way to achieve this ability? Is there another WPMU plugin that helps create this type of revenue share?
Thanks for the support!

Kevin