258 Members of Commissions to take oaths of loyalty and office Before exercising the functions of their office, members of Commissions must take the oaths or affirmations of loyalty and office set out in the First Schedule. 259 Functions and procedure of Commissions (1) Any decision of a Commission requires the concurrence of a majority of the Commission's members who are present when the decision is taken, and in the event of an equality of votes the person presiding at the meeting has a casting vote in addition to a deliberative vote. (2) An Act of Parliament may confer additional functions on a Commission and may regulate the manner in which a Commission exercises its functions. (3) ) An Act of Parliament referred to in subsection (2) may permit a Commission to delegate its functions, but a Commission must not delegate its power to make appointments to, or to make recommendations or give advice on, any office established by this Constitution. 260 Commissions to report annually to Parliament Every Commission must submit a report to the Senate and the National Assembly, not later than the 31st December in any year, on the Commission's operations and activities during the previous year. PART II INTERNATIONAL LAW 261 Application of international law (1) Customary international law is part of the law of Zimbabwe, unless it is inconsistent with this Constitution or an Act of Parliament or any statutory instrument. (2) When interpreting legislation, every court or tribunal must adopt any reasonable interpretation of the legislation that is consistent with international law in preference to an alternative interpretation that is inconsistent with international law. 262 Effect of international treaties, etc. (1) In this section– "international organisation" means an organisation whose membership consists of two or more independent states or in which two or more independent states are officially represented; "international treaty" means a convention, treaty or agreement with one or more foreign states or governments or international organisations. (2) Whenever an international treaty has been or is to be concluded or executed by the President or under the President's authority, the President must cause Parliament to be informed without delay. (3) ) An international treaty which has been concluded or executed by the President or under the President's authority– (a) does not bind Zimbabwe until it has been approved by Parliament; and (b) does not form part of the law of Zimbabwe unless it has been incorporated into the law through an Act of Parliament. - 92 -