Sounds like you're referring to the Releases project panel.
As far as I know there's no way to change or customize this in the product. The usual recommendation is to obtain the source code (provided to license owners) and modify the template to include your fields of choice.
Over the next several weeks we'll be sharing some of our Getting Started guides here in the community. Throughout this series of posts, we'd love to hear from customers and non-customers ab...
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