Hi Mario,
That section will show automatically discounts if the products are on sale, like is showing on our demo. If you want to offer further discounts to your customers then you can use the Automatic discounts in Shopify like in the following screenshot. With the following discount configuration you can offer 10% off if they buy 2 products from a specific collection. The type of the discount should be "Amount of products" (automatic)
Let me know if you have further questions.
