ECOWAS ' REVISED TREATY c) prepare and adopt its Rules of Procedure; d) appointihe Executive Secretary in accordance with theprovisions of Article 18 of this Treaty; e) appoint, on the recommendation of Council, the External Auditors; t) delegate to the Council, where necessary,the authority to take such decisions as are stipulated in Article 9 of this Treaty; g) refer where it deems necessary any matter to the Community Court of Justice when it confirms, that a Member State or institution of the Community has failed toiionour any of its Obligations or an institution of the Community has acted beyond the limits of its authority or has abused the powers conferred on it bythe provisions of thisTreaty, by a decision of the Authority or a regulation of the Council; 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. TheAuthorityshall meet at leastonce a year in ordinarysession.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 decisions. 2. Unlessotherwise providedin thisTreatyor in a Protocol,decisionsof the Authority shall be adopted,dependingon the subjectmatterunderconsiderationby 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.