This procedure allows you to specify exactly which products to display as cross-selling suggestions, ignoring inheritance from the products in the main cart.
Procedure
1. Access the edit page of the desired checkout.
2. Click on the Cross-selling tab.
3. In the Cross-selling section, make sure the Enable cross-selling checkbox is selected.
4. Locate the Product source field and select the Select manually option.
5. A new box titled Cart will appear.
6. Inside the Cart box, use the selection interface to add the specific products you want to offer in cross-selling.
7. After making your changes, proceed to save the configuration.
