Shop Theme Product Coupons (discounts)

I am creating coupons for discounts on products in the shop theme.

I create the coupon (discount) but I only want it to be applied to one product. I don’t want customers to be able to use the coupon for all products.

I want to create different coupons for multiple products. How do I assign individual coupons only to certain products.

I cannot find a video or tutorial for this.