1 - Create a Catalog :

2 - Manually Upload Catalog Items :

3 - Product Sets

It's good practice to include all the products you promote on your website in your catalog.

But it's common that you want to create ads that promote only a subset of your products. Perhaps you run a campaign for seasonal products; those products you have a higher margin on, and many other options.

To do this, you should create a Product Set from your Product Catalog. By default, all catalogs have an “All Products” Product Set

You can create a new product set and choose from a wide set of rules.

You can filter all fields that appear on the product catalog, such as price, category, retailer ID, size, color, material, and by content of the custom labels.

4 - Différence entre "Product Set" et "Product Group" :

What is a product set?

A product set is a subset of products in your catalog. The default product set for each catalog contains all products. You can create your own product sets by applying filters on the data columns associated with your products through the Catalog Manager UI. A product set is required to create an ad set for your Dynamic Ads campaign. In each ad set, you can only promote one product set.

What is a product group?