ECOWAS i) REVISED TREATY carry out all other functions assigned to it under this Treaty and exercise all powers delegated to it by the Authority. ARTICLE 11 MEETINGS 1. The Council shall meet at least twice a year in ordinary session. One of such sessions shall immediately precede the ordinary session of the Authority. An extraordinary session may be convened by the Chairman of Council or at the request of a Member State provided that such request is supported by a simple majority of the Member States. 2. The office of Chairman of Council shall be held by the Minister responsible for ECOWAS Affairs of the Member State elected as Chairman of the Authority. ARTICLE 12 REGULATIONS 1. The Council shall act by regulations. 2. Unless otherwise provided in this Treaty regulations of the Council shall be adopted, depending on the subject matter under consideration, by unanimity, consensus or by a two-thirds majority of Member States, in accordance with the Protocol referred to in Article 9 Paragraph 3 of this Treaty. Until the entry into force of the said Protocol, the Council shall continue to adopt its regulations by consensus. 3. Regulations of the Council shall be binding on institutions under its authority. They shall be binding on Member States after their approval by the Authority. However, in the case of regulations made pursuant to a delegation of powers by the Authority in accordance with paragraph 3(f) of Article 7 of this Treaty, they shall be binding forthwith. 4. Regulations shall be published and shall enter into force within the same period and under the same conditions stipulated in Paragraphs 5,6 and 7 of Article 9 of this Treaty. ARTICLE 13 THE COMMUNITY PARLIAMENT 1. 2. There is hereby established a Parliament of the Community. The method of election of the Members of the Community Parliament, its composition, functions, powers and organisation shall be defined in a Protocol relating-thereto. 11