CHAPTER V SUBSIDIARY MECHANISMS CHAPTER VI SESSIONS Rule 23 Special Rapporteurs, Committees and Working Groups Rule 25 General principles 1. The Commission shall hold Ordinary and Extraordinary Sessions, to enable it to satisfactorily carry out its functions in conformity with the African Charter. 1. The Commission may _ create subsidiary mechanisms such as special rapporteurs, committees, and working groups. Sessions of the Commission shall be held in public unless the Commission decides otherwise or if it appears from the relevant provisions of the Charter that the meeting shall be held in private. The creation and membership of such subsidiary mechanisms may be determined by consensus, failing which, the decision shall be taken by voting. The Commission shall determine the mandate and the terms of reference of each subsidiary mechanism. Each subsidiary mechanism shall present a report on its work to the Commission at each ordinary session of the Commission. Rule 24 Applicable rules for Rule 26 Ordinary Sessions 1. The Commission shall hold at least two Ordinary Sessions per year each lasting for about two weeks, unless the Commission decides otherwise. The Ordinary Sessions of the Commission shall be convened on a date fixed by the Commission upon the proposal of its Chairperson and in consultation with the Chairperson of the African Union Commission. Subsidiary Mechanisms The Rules of Procedure of the Commission shall apply mutatis mutandis to the proceedings of its subsidiary mechanisms. In exceptional circumstances, the Chairperson of the African Union Commission may change the opening date of a session, in consultation with the Chairperson of the Commission. Rule 27 Extraordinary Sessions 1. The Commission shall Extraordinary Sessions. also hold The Chairperson of the Commission shall convene Extraordinary Sessions: At the request of the majority of the members of the Commission; or At the request of the Chairperson of the African Union Commission. Part One : General Rules