h) request the Community Court of Justice, as and when necessary, to give advisory opinion on any legal questions; and i) exercise any other powers conferred on it under this Treaty. ARTICLE 8: SESSIONS 1. The Authority shall meet at least once a year in ordinary session. An extraordinary session may be convened by the Chairman of the Authority or at the request of a Member State provided that such a request is supported by a simple majority of the Member States. 2. The office of the Chairman shall be held every year by a Member State elected by the Authority. ARTICLE 9: DECISIONS 1. The Authority shall act by decision. 2. Unless otherwise provided in this Treaty or in a Protocol, decisions of the Authority shall be adopted, depending on the subject matter under consideration by unanimity consensus or, by a two-thirds majority of the Member States. 3. Matters referred to in paragraph 2 above shall be defined in a Protocol. Until the entry into force of the said Protocol, the Authority shall continue to adopt its decision by consensus. 4. Decisions of the Authority shall be binding on the Member States and institutions of the Community, without prejudice to the provisions of paragraph (3) of Article 15 of this Treaty. 5. The Executive Secretary shall publish the decisions thirty (30) days after the date of their signature by the Chairman of Authority. 6. Such decisions shall automatically enter into force sixty (60) days after the date of their publication in the Official Journal of the Community. 7. Decisions shall be published in the National Gazette of each Member State within the period stipulated in paragraph 6 of this Article. ARTICLE 10: THE COUNCIL OF MINISTERS ESTABLISHMENT, COMPOSITION AND FUNCTIONS 1. There is hereby established a Council of Ministers of the Community.