You can set up catalog levels by certain grouping criteria, for example, by category and type. To do this, use the [Set up product catalog] in the actions menu of the [Products] section.
Select the [Set up product catalog] action to open and configure the list of catalog levels (Fig. 1).
Fig. 1 The setup page for the product catalog
To add a new catalog item, click the [Add catalog level] button. On the opened page, specify:
Note
Only lookup fields on the product page can be used to create catalog levels.
This catalog item hierarchy is defined by the sequence in which the levels are located on the setup page. For example, to group the products by type on the upper level of the catalog, then move the “Product type” level up by using the 
button on the setup page.
