You can target multiple elements by choosing an alternative selector. By default, MT always creates a selector for the single element you clicked. But you can choose alternative selectors. For the widest choice of selectors, click the show advanced link in targeting mode to expand the Targeting suggestions on the right. The numbers to the right of the fields shows how many elements on the page the selectors will target. And if you select one, the page highlighting will change accordingly.
If you can send me a link to the page with the product list, I can offer more specific advice.