Hi, thank you for getting in touch with us.
The default flow of commission is as follows:
Admin can choose global commission which will be set for all vendors and they can also choose commission for per product for any vendor.
Commission value gets calculated on product price itself set by admin/vendors.
For example if the product price is 100 and vendor commission is set as 80% then vendor will receive rupees 80 and admin will receive rupees 20.
According to this flow commission is also shown in sales report.
However kindly explain what flow you are looking for so that we can assist you further.