Define who can access your Jira site using Permissions
Jira Cloud で権限とアクセスを管理します。
Manage permissions in Jira Cloud
Grant space permissions using permission schemes
See how you can limit access in a space using permissions
Types of permissions you can grant in a space scheme
A guide to the permissions that you can grant in a permission scheme
Restrict sensitive data using work item security schemes
How to hide work you don't want everyone to see in your site