The automatic Sub-tasks add-on is a great addition to your workflow as it speeds up the planning and estimating process.
If you have common sub-tasks for your Scrum stories such as peer review, QA, design, etc, or common sub-tasks for your BAU activities such as analysis, validation, design, etc, then this add-on is going to save your team a great deal of time in your work flow.
This add-on is simple, focused to do one thing and do it very well.
Know the health of your system at all times.
By drilling down into a parent issue, you get to see a list of the automated sub-tasks for that parent issue / project. You can edit, add, delete or re-order the sub-tasks
Know when an automated sub-task execution is ran as well as the result. If there was any issue with the execution, this module will alert you on the details and some times give you the chance to re-run the execution.