1. Create a navigation menu called
The handle needs to be:
Add a menu item and name it following this structure: "products/product-handle". This product will serve as the upsell trigger (the upsold product will be displayed IF this product is in cart).
Select the product to be displayed as the upsell for the trigger product defined in step 2 above.
4. Enable the upsell in Online Store > Theme >
> Cart > Sections tab > Scroll down to the Cart Upsell section.