6. For the purposes of the execution of their functions, the sub-sectoral committees shall report to the Committee of Senior Officials on progress achieved in realising the objectives of this Protocol and formulate recommendations for approval by the Committee of Senior Officials. 7. A sub-sectoral committee may establish a specialised working group or groups to assist in the execution of its functions. ARTICLE 13.8 NATIONAL COORDINATION 1. Each Member State shall appoint a sub-sectoral coordinator and a deputy for the areas of responsibility of each sub-sectoral committee contemplated in Article 13.6 of this Protocol. 2. Each sub-sectoral coordinator shall, in respect of his or her area of responsibility, be responsible for a) promoting the achievement of the general objectives, strategic goals and sectoral objectives of the Protocol; b) coordinating the national implementation of the Protocol within each sub-sector and identifying actions for the accelerated implementation of the Protocol; and c) receiving inputs from national public and private sector stakeholders and canvassing the views of such stakeholders regarding any matter dealt with in the Protocol. 3. Each Member State shall nominate one sub-sectoral coordinator as national coordinator to assume overall responsibility within its administration in respect of the transport, communication and meteorology sectors. Such national coordinator shall a) ensure cross-sectoral coordination of implementation strategies within each Member State; b) be responsible for compiling and submitting the three-monthly progress reports to the SATCC-TU contemplated in Article 13.12, paragraph (d) of this Protocol. Such progress reports shall, amongst others, detail (i) compliance with agreed implementation targets and outputs; (ii) adherence by a Member State to time frames for implementation; (iii) factors which are constraining or hindering or are expected to constrain or hinder Member States in meeting implementation obligations; and (iv) lessons learnt from implementation experiences which could provide pointers to other Member States in the progress of implementation; c) liaise with the SATCC-TU and attend meetings with the latter to discuss the implementation of the Protocol;