The following tutorial demonstrates how to configure custom affiliate settings.
The first step is to navigate to the correct page. Go to Offers then Manage to get to a list of offers. Click on an offer.
Here is the information for the offer. As you can see there are many different sections, but the one we are interested in now is Custom Settings. Click the section header.
Here is the page for Custom Affiliate Settings. This includes Custom Payout & Revenue, Custom Caps, and Custom Scrub Rate.
You can add any of these by clicking Add on the top right of each box. As you can see there are already custom settings in place.