Currently it is not possible to add a rule to a discount that checks the amount of products per lineitem and additonal conditions.

e. g.

You want to ensure that only products with a tag and an amount of 10/above is in the cart. This has to be checked by lineitem, so products and variants that include the TAG but have only an amount of 1 in the cart do not apply to the discount.

if you use the condition "amount of products" it is related to all itemlines of the cart.

If you choose "Item quantity" it matches, but you have to add all related products manually in the condition of the rule.

It would help if there is a condition "item quantity of products within a dynamic prouduct group", to achieve the possibility to count items by line and use the discount per lineitem instead of the complete cart.

When a position has only 1 item an the TAG, the discount does not apply.