– 69 – (2.1 – Conditions of employment) iii) by an official of grade P.5 or above, designated by the Secretary-General and the Director concerned respectively, for posts of grades G.1 to G.7. c) All participants in a meeting of the Appointment and Promotion Board, with the exception of staff representatives, shall hold a grade at least equal to that of the post under consideration. d) Meetings of the Board shall be chaired by the regular representative with the highest grade or, in the event of equal grades, with the highest seniority. e) The Appointment and Promotion Board shall establish its own Rules of Procedure. Its proceedings shall, in principle, be secret. Its Rules of Procedure may, however, authorize the transmission of certain information to candidates. f) The Secretary-General shall report to the next regular session of the Council whenever he proposes to take an appointment or promotion decision which is contrary to the advice of the Appointment and Promotion Board. The final decision shall be taken subject to the Council's agreement. The effect of that decision shall be retroactive in the case of promotions. Ref.: Documents C14/99 and C14/104. D 548 (C07) Conditions of service of the Elected Officials – Special housing subsidy The Council, taking into account the constraints of the housing market at Union headquarters and the constraints imposed on the elected officials by the MORSS (Minimum Operating Residential Security Standards) rules, which, within the common system, are applied to determine the housing of the executive heads of organizations of the United Nations common system, having examined the proposal submitted in Document C07/54 to its 2007 session, decides – to approve the creation of a special housing subsidy for the Secretary-General, the Deputy Secretary-General and the Bureau Directors to be paid annually in accordance with the conditions stipulated in Document C07/54; – to fix the annual amount of this special housing subsidy at CHF 71 400 for the Secretary-General and at 50 per cent of that amount for the Deputy Secretary-General and the Bureau Directors in office on the date of adoption of this present Decision, for the duration of their respective terms of office; – that the annual size of the special housing subsidy may be revised under the conditions stipulated in Document C07/54. Ref.: Documents C07/98 and C07/105.