The Prime Minister shall appoint one of the members of the review body to be chairman and may appoint one of them to be deputy chairman.

The persons so appointed shall hold and vacate those offices in accordance with their terms of appointment, subject to the following provisions.

The chairman or deputy chairman may resign his office by notice in writing to the Prime Minister.

If the chairman or deputy chairman ceases to be a member of the review body, he also ceases to be chairman or deputy chairman.