The Police Commission shall consist of five legal voters appointed to serve for a term of three years, unless otherwise provided herein, and until their successors are appointed and qualified. Upon creation, two members shall be appointed for a term to expire on April 1 of the third calendar year after appointment; two members shall be appointed for a term to expire April 1 of the second calendar year after appointment; and one member shall be appointed for a term to expire April 1 of the calendar year following appointment. All terms shall thereafter expire on April 1 of the third calendar year following appointment. A person appointed to fill an unexpired term shall serve to the end of that term. The Mayor shall appoint a Chairman and Vice/Chairman of the Commission from among the members of the Commission subject to the approval of the Board of Aldermen. The term of Chairman and Vice/Chairman shall expire on April 1 of the year following appointment. Except at creation, at which time appointments will be denied by majority vote, all appointments to the Commission shall be made in a manner consistent with the provisions of this charter.