If you signed up before Aug 9, 2021, please click Previous plans to view your applicable plans.
With the Facebook integration, all visitor posts will be converted to tickets automatically once the page is connected with the Freshdesk account. However, for comments on posts, you can configure filters and/or keywords to filter posts and convert them to tickets.
This can be done under Admin -> Channels -> Facebook -> Edit and by choosing the option Convert only relevant posts.