Update the sub-task's assignees by the current issue's value

Use case

In the following use case the assignee of the current issue will be copied to all sub-tasks.

Add the Update linked issue or sub-task post function to the desired transition or create a new transition.

Click on Add field

Choose Assignee

Choose Copy field value form current issue

Click on Add

Update the following filters according to your needs.

Choose Sub-task

Check the option Update sub-tasks matching the specified filter criteria

Use case	Workflow function
Update the sub-task's assignees by the current issue's value	Update linked issue or sub-task
Set the fix version from the current sub-task for all sibling sub-tasks	Update linked issue or sub-task
Copy the due date from the current issue to blocking issues	Update linked issue or sub-task