A/RES/68/251 Pattern of conferences 19. Notes that the percentage of meetings held by regional and other major groupings of Member States that were provided with interpretation services at the four main duty stations was 95 per cent in 2012, as compared with 91 per cent in 2011, and requests the Secretary-General to continue to employ innovative means to address the difficulties experienced by Member States owing to the lack of conference services for some meetings of regional and other major groupings of Member States and to report thereon to the General Assembly through the Committee on Conferences; 20. Once again urges intergovernmental bodies to spare no effort at the planning stage to take into account the meetings of regional and other major groupings of Member States, to make provision for such meetings in their programmes of work and to notify conference services, well in advance, of any cancellations so that unutilized conference-servicing resources may, to the extent possible, be reassigned to meetings of regional and other major groupings of Member States; 21. Welcomes the efforts of all users of conference services to inform the Secretariat as early as possible of any cancellation of service requests so as to allow for such services to be smoothly redeployed to other meetings; 22. Notes with satisfaction that, in accordance with several resolutions of the General Assembly, including resolution 67/237, section II.A, paragraph 13, in conformity with the headquarters rule, all meetings of Nairobi-based United Nations bodies were held in Nairobi in 2012, and requests the Secretary-General to report thereon to the Assembly at its sixty-ninth session through the Committee on Conferences; 23. Notes with concern the recurring underutilization of the conference centre of the Economic Commission for Africa, specifically given the ongoing renovation of its facilities, recognizes the continuing promotional efforts and initiatives of the Commission, and requests the Secretary-General to report thereon to the General Assembly at its sixty-ninth session through the Committee on Conferences; 24. Requests the Secretary-General to continue to explore additional means to increase the utilization of the conference centre of the Economic Commission for Africa, including with its partners such as the African Union, and to report thereon, including on the impact of the initiatives of the Commission, to the General Assembly at its sixty-ninth session; 25. Also requests the Secretary-General to encourage the heads of entities of the United Nations system to use as a matter of priority, when applicable, the conference centre of the Economic Commission for Africa to ensure greater utilization of the conference facilities; 26. Recalls section II.A, paragraph 17, of its resolution 67/237, reiterates its request that the Secretary-General formulate a competitive pricing structure and an appropriate marketing strategy for the conference centre of the Economic Commission for Africa, and requests the Secretary-General to report thereon to the General Assembly at its sixty-ninth session; 27. Recognizes the proactive efforts of the Secretary-General to identify ways to enhance efficiency and effectiveness in conference services; 28. Requests the Secretary-General to propose, at the sixty-ninth session of the General Assembly, a comprehensive review of conference servicing, 4/12