How to reassign a task to group one hour after the user just accepts the task and do nothing?

Question

A task is assigned to a group.
One of the user from the group accepts the task and be idle (do nothing, performs no action).
After one hour the task should be reassigned back to the group.
Please help here on how to acheive this?

Stefan Helzle · Answer

Task escalations are what you are looking for. But, keep in mind, that the time defined here is not based on when the user accepts the task, but on the time of assignment. 
 docs.appian.com/.../Process_Node_and_Smart_Service_Properties.html

Chris · Answer

I'm not sure that we can achieve this within the task settings directly, for specifically referencing task acceptance time. As Stefan notes, escalations and exceptions are based on task assignment time. 
 You could potentially solve this with a side flow in the process model that checks a Task Report, one of the data points available is Net Work Time (=NetWork()), which will show the elapsed time between acceptance and current time for active tasks. Some side path would have to check this report for the specific task regularly, and restart the task once the NetWork time grows out of your range. 
 https://docs.appian.com/suite/help/25.1/Process_and_Report_Data.html#task-metrics 
 This is from an Active Tasks Report, you can see the rows are blank where the task is not yet accepted:

How to reassign a task to group one hour after the user just accepts the task and do nothing?

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