- From the ATG Control Center main navigation menu, select Catalog Management > Catalogs. 
- Select the folder in which the catalog to which you want to add a category exists. 
- Click the catalog to which you want to add a category, so the catalog name moves to the left-hand panel. 
- Select the catalog, so the name appears highlighted. 
- To create a new category, click the New Category button. To add an existing category to the current catalog as root, click Add Category. 
- If adding a new category, fill in the Name field (required) and any optional fields, then click OK. 
The category is automatically added to the rootCategories property of the catalog.

