edx-platform - How to enable BULK EMAIL in the instructor dashboard

Course staffs of a certain course can send notification emails (bulk emails) to students in the instructor dashboard of Open edX's LMS. But, to enable that functionality, the only way I know right now is:

1. Go to the django's admin interface > Bulk_Email > Course authorizations

2. Add a new course authorization and check the "Email enabled" checkbox with:

Course id: Org/Course/CourseRun

E.g: UNS/Py_001/201405

3. Go back to the instructor dashboard, instructor tab, the Email section will show up:

Cool! \m/\m/\m/