Adding an Order Bump on your checkout page gives you an opportunity to upsell while your customers are in the final steps of their purchase. It will allow your customers to add more items to their cart just by clicking on a checkbox.
To make this work, you need to have a Checkout Page / Order Page connected to payment provider. Open your checkout page and click Payment Settings to select your payment provider and set the amount to charge for the main item.
Add an Order Bump
Click the Add [+] Button to slide out the Page Elements menu. Click the Order Bump element from the menu, then drag it to a section on the page.
Set the Order Bump Price
Click the [settings icon] to load the property settings of the Order Bump element
Add a product name
Enter the amount of the Order Bump item
Edit the information in the page to match your product name and price
When a customer checks the order bump item, they will be charged both for the main item and the order bump item when they submit their order.