Check Discount options

I have multiple sites that have run into trying to use an item discount while in the bottom bar discount screen (Check discount) which will discount all eligible items on the check. 

I would like a way to disable item based discounts from being on the check based discount screen. Currently you can uncheck item discount by clicking the funnel icon and unchecking it, but I want an option under check based discounts on the admin webpage where I can disable that from showing item discounts in that discount screen at all. 

I still want check based discounts to show up there for any manager comps, or whole check discount in general. I just don't want to have a buy one get one discount showing up that would make all beers or liquor free instead of just the one they have highlighted. They should need to select the seat, and then the item in order to do an item discount always.

Errors are they don't click the seat first and just tap the item and hit the bottom discount. If not caught this will discount all items causing loss of money.