We are using Jira 7. While creating user story issue type there are subtasks field which we want to hide completely for a set of users . They should be able to have read only access to backlog and what stories are work/ For other issue types (bugs,tasks etc) we want to completely disable. This information we want to expose this information to stakeholders. We don't want dashboards we create at project level to be visible . How do you accomplish this ?