With this settings, you can either apply the commission rules for admin or for vendors as shown below-
If you choose Vendor, then all the commission rules which you will be declaring will be for the vendors. Here’s an example where a fixed commission of 100 bucks is declared for vendors and the vendors gets the same:
Pic 1: Showing settings where commission rule is set for vendor and the commission is fixed to Rs 100:
Pic 2: You can see the order details where a product of Rs 1000 is sold from vendor’s store and he gets only Rs 100 from the same: