Extend generators allow you to add issues to a structure based on Issue Links, Epic Links and Sub-task relationships.The following Insert generators are available:
Team-managed Project Hierarchy Extender — Pulls in issues under epics and/or sub-tasks under issues for Team-managed projects.
Always Up to Date
Generators run every time you open a structure, so the list of issues added by the Extend generator is always up to date.
Additionally, if issues change as you work with the structure, they will be added, removed, or moved accordingly, based on the rules of your Extend generator.