Adding products to a channel ensures that specific products can be associated with the desired channel headers when exported.

You can add Products to a channel by first navigating to Products> Products, and either selecting the desired product(s) from the table or using the filter search to find your products.

Select the desired products by clicking on the checkboxes. An action bar with the option to add your selection to a Catalog, a Channel, and an Export. Select Add to Channel

A window will pop up where you can select the channel from the dropdown menu. If you want additional actions for the selection, such as adding to a catalog, select Continue bulk actions before clicking Add to Channel.

Further Reading:

What is a Channel?

Exporting from a Channel