The act section of a campaign item is the thing we want the customer to do to trigger a discount. When you think about it a discount is actually composed of two things: The thing we want the customer to do; the act part, and the thing the customer gets; the award part.
Think of “Act” as “The customer must buy this particular product”, “The customer must buy for more than x amount”, “The customer must buy something from this particular store, catalog, or category”, etc.
Targets can be combined to form even more powerful campaign items such as a product bundle or kit depending on which side of the pond you’re on.
If multiple targets are set up in the “Act” section of the campaign item they must all be satisfied in order to trigger the discount. Say you want to the customer to buy two products to get a discount. You’ll set up two targets: One for each of the products in involved. Ucommerce will look for these products in the cart of they are both found will trigger the discount.