146 (3) Subject to this Constitution, any decision of a Commission requires the concurrence of a majority of the Commission’s members who are present when the decision is taken. (4) An Act of Parliament may provide for the procedures to be adopted by a Commission, and in any respect that is not so provided for the Commission may determine its own procedures, but any such procedures must be fair and promote transparency in the performance of the Commission’s functions. 18.5 Funding of Commissions Parliament must ensure that sufficient funds are appropriated to the Commissions to enable them to exercise their functions effectively. 18.6 Commissions to report annually to Parliament (1) Every Commission must submit to Parliament, through the responsible Minister, an annual report describing fully its operations and activities, the report being submitted not later than the end of March in the year following the year to which the report relates. (2) An Act of Parliament may require a Commission to submit further reports in addition to the annual report specified in subsection (1), and may prescribe the way in which such reports are to be submitted. PART 2 GENERAL 18.7 Diligent performance of constitutional obligations All constitutional obligations must be performed diligently and without delay. 18.8 Funding of constitutional bodies and other institutions (1) The Government must ensure that adequate funds are provided— (a) to the Commissions and other institutions established by this Constitution, to enable them to perform their functions effectively; (b) to Parliament, to enable it and its committees to meet whenever necessary; and (c) to all other institutions of the State and government, to enable them to perform their obligations under this Constitution. (2) The Commissions and other institutions established by this Constitution must be given a reasonable opportunity to make representations to a parliamentary committee as to the funds to be allocated to them in each financial year. 18.9 Customary 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. (2) When interpreting legislation, every court and tribunal must adopt any reasonable interpretation of the legislation that is consistent with customary international law applicable in Zimbabwe, in preference to an alternative interpretation inconsistent with that law.