This article applies to the 123-reg InstantSite package.
This article will explain how you can add categories to your eShop page.
Scroll down to the Create your website section and click on the InstantSite icon.
Click on the Login button next to the relevant InstantSite package.
In the Site map panel, click on the eShop page.
Click on the Categories tab.
Click on the Add New Category icon.
Fill in your new category details and click on the OK button.