(a) By ordinance.
(i) City Council shall encourage the participation of citizens in their government through the establishment of boards and commissions to carry out City business. Such boards and commissions shall be established by ordinance including a clear statement of whether they shall be advisory in nature or they shall have power and authority under City ordinance or state or federal code.
(ii) City Council may not change the powers or authority of any board or commission except by ordinance.
(iii) City Council may by ordinance abolish any board or commission not established by state or federal mandate or by this Charter.