The foregoing purposes and powers may be administered by such special commission, board, department or bureau of the municipality or by such one or more existing commissions, boards, departments or bureaus of the municipality, or by any combination thereof or division of functions thereamong, as may be provided by ordinance adopted by the corporate authorities, and the words "the municipality" as used in reference to the administration of this division include any commission, board, department, bureau, officer, or other agency of the municipality given any such administrative powers by ordinance adopted by the corporate authorities.
65 ILCS 5/11-48.2-3