We can restrict access by setting the issue’s security level.
To set the issue security level on issues in company-managed projects:
- Choose the lock icon at the top-right of the issue. This icon only appears if the project has a security scheme configured.
- Select the desired security level.
You can also remove an issue’s security level by selecting the lock icon and selecting Remove security level.
Jira admins can add, edit, or remove security levels (and their membership) through issue security schemes.