You can do this with a Trigger that calls another Start (the task will run in a new case)
A small sample can be found here: [triggerAllUsers_61.iar][1]
![alt text][2]
[1]: http://developer.axonivy.com/q-and-a-attachments/triggerAllUsers_61.iarhttps://answers.axonivy.com/upfiles/triggerAllUsers_61.iar
[2]: http://answers.axonivy.com/upfiles/createCaseForEveryUser.pnghttps://answers.axonivy.com/upfiles/createCaseForEveryUser.png