Instead of updating each task in a task group individually, all the tasks in a particular group can be updated at once.
To update all the tasks in the task group, first access the task group via the Task groups listview on the relevant case, service, or activity, by clicking on the title of the task group.
On the next screen click the Edit All Tasks in this Group link in the Task Group Actions section in the left hand sidebar.
Make any desired changes, and even complete the tasks in the group, and then click either of the Save buttons at the bottom of the page.
