The System may utilize the services of an advisory committee for conceptualization, design and implementation of applications considered or adopted by the System. The advisory committee shall be comprised of (a) 8 legislative staff assistants, 2 to be appointed by the Speaker of the House of Representatives, 2 by the Minority Leader thereof, 2 by the President of the Senate and 2 by the Minority Leader thereof, but at least one of the appointments by each legislative leader must be from the staff of legislative appropriation committees; (b) one professional staff member from the Legislative Reference Bureau, appointed by the Executive Director thereof; and one from the Commission on Government Forecasting and Accountability, appointed by the Executive Director thereof; and (c) the Executive Director of the Legislative Information System, who shall serve as temporary chairman of the advisory committee until a permanent chairman is chosen from among its members. Members of the advisory committee shall have no vote on the Joint Committee.