Bulk Discount Help

Hi There,

I’ve been using this plugin to attribute bulk discounts to several products in my store. However there is one scenario I can’t figure out.

The website is https://www.catiesorganics.com. I have an offer for people who purchase 6 or more of a product to receive a discount however I’d like them to be able to combine any one of 4 different products and still get that bulk discount. Here is the offer I am offering. I just need to figure out how to set it up on the backend to function.

“Bulk Purchase Pricing:
Choose from Catie’s Organic Greens, Catie’s Gluten Free Greens, Catie’s Whole Plant Food Vitamin C Plus, or Catie’s Raw Vegetable Calcium
(Note: Discount will be applied at checkout)

Buy 6 or more of any item, get $4.99 per item off
Buy 12 or more of any item, get $9.99 per item off”

Right now i have it set up to offer the discount for each item separately but how do I get it to count the 4 different products in varying amounts to equal the 6/12 quantity that triggers the discount? All the products are priced the same.

https://www.ads-software.com/plugins/woocommerce-bulk-discount/