Standard Catalog
To create a child category or product:
Select the Catalog Management>Product Catalog window.
Navigate to the category to which you want to add a category or product, so the category name is highlighted.
Click the New Item button. The New Item dialog box appears.
Select Category or Product as the item type.
Fill in the Name field (required) and any of the optional fields.
Click OK.
The new category appears as a child category or child product of the parent category in the catalog.
Custom Catalog
To create a child category or product:
Select the Catalog Management > Catalogs window.
Select the folder in which the catalog to which you want to add a category exists.
Double-click the catalog to which you want to add a category, so the catalog name moves to the left-hand panel.
Select the category to which you want to add the child category or product, so the name appears highlighted.
To create a new category or product, click the New Category or New Product button. To add an existing category or product to the current category, click Add Category or Add Product.
The new category or product appears as a child category or child product of the parent category in the catalog.