When adding a new event, the "Enable Coupon" selection allows Global, Single, Group, Both. It's missing the ability to turn off coupons for the event, which presumably can only be done at the Global level right now.
That's correct. I will try to implement it in version 2.2.1. I am going to release version 2.2.0 this week but I am afraid of I could not add this option to this version.
If I can add this option, I will inform you. Otherwise, you will need to wait until version 2.2.1
