Okay so first I will just lay out what I want to achieve and we'll go from there and maybe someone will have a clue of what I should do exactly to go about this.
I have donations coming through from several websites, they need to go through two accounts, the first one takes a small percentage, then the second receiver gets the rest. The first one is the main account and acts as a filter for the donations to grab a percentage. The final receiver is the owner of the original website from which the donation came. The main account should have all of the donations organized by the domains they came from instead of individual donations per person, so the domains are perhaps "sub-accounts" off of the main one, if that's possible.
For a reference in-action if you go to http://bandcamp.com and order an album, it will go through PayPal Express Checkout and it just shows the total amount. After that the artist will receive a final amount in PayPal after bandcamp takes...