Subject to the provisions of this Charter, the department head, commission or board in charge of each department of the City government shall formulate all rules and regulations required for the organization and conduct of his or its department and of the divisions under his or its jurisdiction. Unless otherwise provided in this Charter, each such department head, commission or board shall be the appointing authority for his or its department and, as such, shall be responsible for the appointment of all division heads, subordinates and employees of his or its department, subject to the civil service provisions of this Charter. For the purpose of this section, all elective officers, except Councilmen, shall be considered department heads.