1. Each member may, by written communication to the Director General, propose amendments to this Agreement. The Director General shall communicate these proposals to all Organisation members. If, within six months from the date of the communication, one half plus one of the members reply favourably to the proposal, the Director General shall present it for adoption at the first General Assembly held after this period. Amendments shall be adopted by consensus of the members present or represented. Once adopted by the General Assembly, amendments shall be subject to internal procedures for acceptance, approval or ratification set out in the domestic legislation of members. Amendments shall enter into force thirty days after the deposit of the instrument of acceptance, approval, ratification or accession representing two thirds plus one of the members of the organisation.