21. 除了直接向外勤支助部(外勤部)汇报的联合国外地行动外，每一环境管理系统将在相关的地点在高级管理指导小组的指导下，通过现有的负责设施和业务的技术小组在地方层面进行运作。每个高级管理指导小组将向全秘书处范围的环境管理系统协调机制汇报，外勤部将代表外地特派团进行汇报。技术小组将定期评估各自所在地点的政策、程序和活动，分析相关的环境影响、经验教训、改进和协同机会。
21. Except for United Nations field operations, which will be reporting directly to the Department of Field Support, each environmental management system would operate at the local level through the existing technical team responsible for facilities and operations under the direction of a senior management steering group at the relevant geographic location. Each senior management steering group would report to the Secretariat-wide environmental management system coordination mechanism, as would the Department of Field Support on behalf of the field operations and missions. The technical teams would undertake periodic assessments of the policies, procedures and activities at their respective geographic locations and analyse the related environmental impacts, lessons learned and opportunities for improvement and synergies.