There are two places where you can add an order bump.
On The Sales Page
Double-click on the sales page object.
Turn on the single page toggle. [Article]
Turn on the order bump toggle.
Add in the order bump rate %.
Select the order bump product from the drop-down menu
Click save.
On The Order Page
Double-click on the order page object.
Turn on the order bump toggle.
Add in the order bump rate %.
Select the order bump product from the drop-down menu
Click save.
