Working Groups (WG) can be established by the President in agreement with By-Laws no. 3.6 with EC members and other IFToMM officers in order to study a specific matter that cannot be solved at the EC meeting. In general, a WG is establish during a EC meeting and will last at the time of the next EC meeting. The period of the WG work can be extended upon considerations of the President but cannot last more than three years. The WG will be coordinated by a person acting as Chair of the WG. The duty of a WG consists in studying the matter and proposing possible solutions in a written report that EC will consider for the final decision for required actions.