(a) The Planning Commission shall consist of seven persons appointed by the Council. In addition, the City Manager shall serve as a member ex-officio without vote.

(b) Four commissioners shall have terms of four years and three commissioners shall have terms of three years. Present commissioners shall continue in office until the expiration of their terms. In implementing this section, the initial terms of commissioners shall be arranged by the City Council so that the terms of two members shall expire each year. Any appointment to fill a vacancy shall be for the unexpired term.