Adding a cross-sell, up-sell and related products are available whether you’re working on a Physical Product, Online Lesson or Courses.
A product marked as a cross-sell item for a certain product will be seen on the page of that product as a related product, likewise, if the client is on the page of the cross-sell item, the product will be seen as a related product.
A product marked as an upsell item for a certain product will be seen on the page of that product as a related product, however, if the client is on the page of the upsell item, the product will not be seen as a related product.