You don't. The subtasks rightly take the security level of the parent.
Technically, it's a bit of a pain to have different sub-task security levels. In the real world, humans simply don't grasp it, and you shouldn't do it because it will break for them. And your administrators would have to understand a morass of rules around it to get it even vaguely right whenever they're doing any form of setup, let alone the clever stuff like automation.
Badges are a great way to show off community activity, whether you’re a newbie or a Champion.Learn more
A picture tells a thousand words. And agility boards have just released their latest feature: cover images on issues – so now your board can tell a story at first glance. Upload attachmen...
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