Sub-task is not a field. Sub-tasks are issues in their own right and there's a whole panel dedicated to them on their parent issues.
I'm not sure quite what you're looking for, unless you just mean "put a link to "create subtask" on the main issue display"?
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...
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