Products are added to categories through the Product Catalog portion of the Site Manager.
In the Site Manager, select Product Catalog.
Select Categories from the left-hand pane.
The categories that will be displayed belong to Changing Catalogsthe catalog that is currently configured as the default catalog. If you want to add the product(s) to a category that belongs to a different catalog, you will need to change to that catalog. Follow the steps in section Changing Catalogs to change to a different catalog. Proceed to section Adding the Product if you do not need to change catalogs.
Optional - View the Category Before Adding the Product
Optional - Viewing the Category After Addition