At the moment it's not possible to achieve this level of restrictions within JIRA built-in tools solely.
However, you can try this plugin as it might be exactly what you are looking for:
Also, please check https://jira.atlassian.com/browse/JRA-1330 for discussions, reasons why you can't do it, and LOADS of workarounds.
I hope it helps!
In the past, Portfolio for Jira required a high degree of detail–foresight that was unrealistic for many businesses to have–in order to produce a reliable long-term roadmap. We're tur...
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