In the Catalog Customize section, you (CSP Partner Admin) can add products in the Catalog.
1. Select "Catalog"→ Customize.
2. By drag & drop option you can sort the products into categories.
Note! Products having exclamation mark (!) will not appear in the Product Catalog, as it is "Not available in your country or for your industry". In more detail read the article "Product unavailable“ badge description.