5.—(1) A person appointed to be Chairman of the Authority may act as such only for the purpose of presiding at the meeting at which he is appointed unless his appointment is approved by the Minister.
(2) If in the case of a person appointed to be Chairman of the Authority the Minister decides not to approve the appointment, then as from the date on which the Minister notifies his decision to the Authority there shall for the purposes of paragraph 4 of this Schedule be deemed to be a casual vacancy in the office of Chairman, but this provision shall be without prejudice to the right of a previous Chairman to continue in office under paragraph 3 of this Schedule until his successor becomes entitled to act as Chairman.