(1) Before making a decision under regulation 17 to suspend or cancel a person's accreditation, the Secretary must:
(a) tell the person, in writing, of the Secretary's opinion and the reasons for the opinion; and
(b) ask the person to show cause, in writing, within a specified period of at least 28 days after receipt of the notice, why the accreditation should not be suspended or cancelled.
(2) The Secretary must not make a decision under regulation 17 until the earlier of the following:
(a) when the person responds to the notice;
(b) the end of the period specified in the notice.