1. At the bottom of the Product’s description:
2. After checkout, upon completing a purchase:
To set this up, head to the product in your inventory that you would like to add recommendations to, then head to the Related Products tab. You can then see a list of all your products, scroll through and find the products you want to recommend and click the check box.
You also have the option to make a related product mandatory meaning that the customer needs to book the related product in addition to this product. This will appear as the second step within the booking process.