Magento Commerce, 2.2.x

Cross-sell items are similar to impulse purchases positioned next to the cash register in the checkout line. Products offered as a cross-sell appear on the shopping cartA grouping of products that the customer wishes to purchase at the end of their shopping session. page, just before the customer begins the checkout processThe process of gathering the payment and shipping information that is necessary to complete the purchase of items in the shopping cart. In the final step, the customer reviews and places the order..

Cross-sells in Shopping Cart

To select cross-sell products:

1. Open the product in edit mode.
2. Scroll down and expand the Related Products, Up-Sells, and Cross-Sells section. Then, tap Add Cross-Sell Products.

Add Cross-Sell Products
3. Use the filter controls to find the products that you want.
4. In the list, mark the checkbox of any product you want to feature as a cross-sell product.

Cross-sell Products
5. When complete, tap Add Selected  Products.