A custom action is any visitor activity action or state that you want to track and interact with on a website. You can also use custom actions to find out where visitors are geographically located. The purpose of custom actions is to track what visitors are doing on a site or where they are located, and to use this information to dynamically modify their user experience in some way, for example, by showing specific content based on the page they are viewing or the city they are in.
The Frosmo Platform handles tracking for products, conversions, transactions, and basic modification events (displays, true displays, clicks) separately. You do not need to duplicate this tracking with custom actions.