Last updated: 2021-01-21

Source: https://support.freshdesk.com/support/solutions/articles/50000003211-is-it-possible-to-link-service-tasks-in-freshdesk-

Yes, it is possible. By using trackers, parent service tasks can be linked in Freshdesk.  If you have multiple service tasks with a similar problem, you can create a Tracker and link the all tasks to it.

Click here to know more about Linking.