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2. The Executive Board shall annually elect its Chairman and other officers, who shall be eligible for re-election. 3. The Chairman of the Executive Board shall be entitled ex officio to participate, without the right to vote, in the deliberations of the Conference. 4. Any Member of the Organization which is not on the Executive Board, shall be invited to participate in the discussion by the Board of any matter of particular and substantial concern to that Member, and shall, for the purpose of such discussion, have all the rights of Members on the Board, except the right to vote. Article 78 Powers and Duties 1. The Executive Board shall be responsible for the execution of the policies of the Organization and shall exercise the powers and perform the duties assigned to it by the Conference. It shall supervise the activities of the Commissions and shall take such action upon their recommendations as it may deem appropriate. It shall prepare the provisional agenda of the Conference. 2. The Executive Board may make recommendations to the Conference, or to inter-governmental organizations, on any subject within the scope of this Charter.