Hi @Ed Green,
I think the workflow-condition "Sub-Task Blocking Condition" is there out of the box.
Add this condition to the workflow steps, which are leading to the status "Done".
If there are open subtasks then, you won't see the closing transition of the parent issue.
You can not make it out of the box. You would need an addon. For example, if you have Adaptivist ScriptRunner, then you can use "All sub-tasks must be resolved" condition. You can read more here
Just the FAQs! Welcome to the Community, and this Focused-FAQ! Here, we've pulled together some of the most frequently asked questions associated with Jira Service Desk (JSD). We hope ...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs