It's likely that you can't.Presuming that you have setup email then New ticket alerts can be sent to:AdminDepartment ManagerDepartment MembnersOrganization Account MemberSo if a ticket is opened in Deparment Foo. And you have Agents (staff) that are not members of that department then those agents would not receive an alert for a ticket being opened that they do not have access to.Also alerts can be overridden by Department settings.You would control your Alerts and Notices at:Admin panel -> Settings -> Tickets -> Alerts and Notices.You would also make sure that the department settings aren't overriding the notices by looking at the department settings at: Admin panel -> Agents -> Departments.