'Make the first subsection a prerequisite'

def _setup_prereq(self):

    self._auto_auth(self.STAFF_USERNAME, self.STAFF_EMAIL, True)
    self.studio_course_outline.visit()
    self.studio_course_outline.open_subsection_settings_dialog(0)
    self.studio_course_outline.select_advanced_tab(desired_item='gated_content')
    self.studio_course_outline.make_gating_prerequisite()
