Members of the CWM are appointed four years coinciding with the EC terms, and membership should be widely distributed geographically. The CWM has a chair and a vice-chair and 6-8 members-at-large. One of the CWM members is responsible for the CWM website and electronic communication. The IMU-EC appoints an EC-CWM liaison (observer), who should be present at all committee meetings. The CWM should meet at least once a year, preferably by videoconference.
The first CWM committee was appointed by the IMU EC in March 2015. The term of membership is four years, coinciding with the term of the EC, with possible renewal for a further four.