On the Sales Channels tab, configure additional features to optimize the shopping experience.
Button on your Facebook page
The button on your Facebook page allows you to add a button to your Facebook page, for example: Buy Now, which redirects to its website.
From the "Sales Channels" tab, upon clicking "Add," you are redirected to your Facebook page where I can add the call-to-action and the URL of the site to which you wish to direct your community.