1. You can add new categories via the section at the top of the Products Module.
2. Enter the name of the new category.
3. Select whether or not the category is a sub-category of another category.
4. Specify the position of the category, or leave it to be positioned last.
5. Click Add category
6. To add a thumbnail image to the category, select one from your computer using the Choose file and click Update Category
7. Remember that the category needs to be made active before it will show up on the site