In a typical Council meeting in the old Legislative chamber, members were seated to the left and front of the President's chair in the Chamber patterned after the adversarial layout of Westminster system legislatures. The three rows to the right were reserved for government officials and other people attending the meetings. At the new LegCo site at Tamar, members sit facing the President (and council officers) in a hemicycle seating arrangement. At present, the Secretariat, headed by the Secretary General, provides administrative support and services to the Council through its ten divisions. In addition to being the chief executive of the Secretariat, the Secretary General is also the Clerk to the Legislative Council responsible for advising the President on all matters relating to the procedure of the council. The following chart lists the composition of the Legislative Councils of Hong Kong since the Special Administrative Region (SAR) period from 1998, the composition indicate the seats controlled by the camps (green for the pro-democracy camp and red for the pro-Beijing camp) at the beginning of the sessions, while the diagrams indicate the composition when the council was dissolved. Services to members were originally provided by the Office of the Clerk to the Legislative Council which was part of the Government Secretariat. Additional support later came from other administrative units, i.e. the Unofficial Members of the Executive and Legislative Councils (UMELCO) Secretariat and its variants, in consideration of the gradually rising volume of work in Council business. With the establishment of UMELCO in 1963, public officers were seconded to UMELCO to assist members to deal with public complaints and build up public relations with the local community. During their secondments, public officers took instructions only from Council members. The practice remained when the Office of the Members of the Executive and Legislative Councils (OMELCO) replaced UMELCO in 1986. In 1991, the OMELCO Secretariat was incorporated. As a result of the complete separation of membership of the Executive and Legislative Councils, OMELCO was renamed the Office of Members of Legislative Council (OMLEGCO). The Legislative Council Commission, a statutory body independent of the Government, was established under The Legislative Council Commission Ordinance on 1 April 1994. The Commission integrated the administrative support and services to the council by the Office of the Clerk to the Legislative Council and the OMLEGCO Secretariat into an independent Legislative Council Secretariat. The Commission replaced all civil servants by contract staff in the 1994–1995 session.