1. A tree-style list of categories, sub-categories, and the products they contain. This is like a site index of all category and product pages. 2. An alphabetical index of products by first letter. You can set it up to have all products on one A-Z page, or you can split it up however you want. For example you can have one page for A - N, and another for O - Z, or you can have one page for each letter - it’s flexible.