Categories can have child categories.
To add a Child Category to an existing category, click the Catalog header on the left side of the page, and then click the Categories tab on the page that opens.
Next, click the box next to the Category you wish to add a child category to, and then click the Add Child Category button.
On the page that opens, give the category a code and a name. You can also add a Category Title image, a Category Tree image and information for the header and footer.
When finished, click the Add button.
You can also add a Child Category in the Edit Category page.
On the page that opens, click the Add Child Category button, then add the information as explained above.