Recommended Products Intro and Settings
The Recommended Products extension is simple to setup, simply activate the extension like any other plugin then go to Downloads > Settings > Extensions. Here you will enter your license key (to receive automatic updates) and choose from several options for how you want the extension to function.
Show on Downloads - Checking this box will make the recommended products display on individual product pages.
Show on Checkout - Checking this box will make the recommended products display on the checkout screen.
Number of Recommendations - Determines how many recommended products are shown.
Show Free Products - Checking this box will cause free products to be included in the recommendation. By default free products are excluded.