In the summer of 1951, a General Assembly of the organisation's members was held in Paris, which appointed a Secretariat as the acting administration with offices in London. By 1952 the organisation had members in 14 countries, by 1954 in 25 countries and by 1955 in 30 countries. The second General Assembly in 1953 set up a commission to draft the text of the constitution of the organisation. Following amendments at the third General Assembly in 1955, the organisation's provisional Constitution was approved for adoption. In the same year humanitarian activities were initiated by the creation of the World Service Trust as a specialised agency of the organisation.