This can be done by linking the sub-tasks when they are created to the "Most recently created issue" (in this case, the previous sub-task).
Note. You need to use the full "Create issue" action to create sub-tasks so that you can edit other fields.
You rule will look something like:
Hey Community mates! Claire here from the Software Product Marketing team. We all know software development changes rapidly, and it's often tough to keep up. But from our research, we've found the h...
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