If you wish to adhere (or enforce) one coupon to another you will need to enable this on the coupon detail screen.

Control > Commerce > Coupons > Coupon (Add/Edit)

Within the Main panel you will find the Enforced Coupons option:



Here is an example of how this can be applied:

• Coupon: DISCOUNT10 (product discount)
• Coupon: FREESHIP (shipping discount)

Select the coupon you wish to adhere (FREESHIP) to the one being edited (DISCOUNT10):




Once saved, customers who apply the DISCOUNT10 coupon:



- will automatically have the FREESHIP coupon applied to the total: