The City Planning Commission shall consist of the following members: the Mayor and one member of Council, both of whom shall serve as non-voting ex officio members, and five electors of the City. The Council President shall designate the member of Council to serve during such member's term on Council. The Mayor shall appoint the electors with the concurrence of Council for staggered terms of three years each (or such shorter term as may be initially necessary to achieve staggered terms). At least three of the members appointed by the Mayor shall possess specific knowledge in one or more of the following areas: urban planning, architecture, engineering, historic preservation, and real estate development. The voting members of the Planning Commission shall elect the Chair of the Planning Commission from among their group. No compensation shall be paid for service on the City Planning Commission.