In order to do that you have to configure the Screen Scheme. Here it is some documentation.
You can see this answer too about the same topic:
https://answers.atlassian.com/questions/48332/modify-jira-issue-detail-screen
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.