Have many tracking & commission types set up but don't know which one of them will take effect?
1. Between Tracking Methods
As you've known, 2 tracking methods can be used to calculate your affiliates' commission: by link or coupon. However, under any circumstances, only ONE will take effect. Therefore you won't give two commission types within an order even if you enable both tracking types and customers use both affiliate links and coupons to place orders. In case both are used, the order will be tracked by coupon and will give the affiliate a coupon commission only.
Tracking by Coupon > Tracking by Link.
2. Between Commission Types
In case many commission types are applied to the same referral at the same time, only ONE will take effect and the order will be tracked by the one that comes first as below:
Lifetime Commission > Special Commissions > Default Commission.