Approval of parent should approve children

Hi,

We have a scenario where we want a scrum story to keep track of the underlying tasks that a project wants to deliver to a release. First, we want the story to be approved by a role defined by a release team before it can be delivered to the release stream. However, the precondition that allows you to do this also covers the tasks delivered as children to the story. This means that the approver must approve all tasks aswell as the story.
Perhaps there should be some kind of shortcut where an approval of a parent also approves the children?

Regards,
Hampus