Combined Coupons - how to use 'parent'?

I've set up a couple BuyX/GetY coupons:
buy4 get5
buy8 get10

But I would like for the buy8get10 to also include free shipping. How would I set this up?

Hello,

You would need to use a parent coupon:

Coupon 1: your buy 8 get 10
Coupon 2: free shipping coupon
Coupon 3: parent coupon, set process type to only if all apply and add coupons 1 and 2.

Then give out coupon 3.