For recommendations to work on a site, the recommendation feature must be enabled for the site. To enable the feature, if it's not already enabled, contact Frosmo support.
Learn how to create recommendations in the Frosmo Control Panel.
You can also view recommendation statistics in the Control Panel.
If you're a developer, or if you just want to learn about the more technical aspects of working with recommendations, such as the Recommendations API, see the recommendation developer guide.