We have a wide variety of customers with numerous scoring systems, many of which are complicated, unique, or one-offs (or all three!). Creating unusual scoring systems can be a fun aspect of the game.
However, we obviously can't cover every conceivable situation, and your specific case appears to be one we can't address precisely.
The great news is that our system offers many options, and you should be able to input something very close to your actual system. It will certainly be much closer than any other service out there can provide.
So rest assured that you'll be getting the best information available. Take your best shot at creating something similar, and go out there and crush your Draft.
I recommend reviewing Draft Dominator - The Complete Video Library to learn how to set up a unique scoring system for your league.