A. 
The head of each department, known as the "Director," shall, subject to the supervision of the Business Administrator and subject to the Charter and ordinances of the City:
(1) 
Have, exercise and discharge the functions, powers and duties of the department.
(2) 
Prescribe the internal organization of the department and the duties of his or her subordinates and assistants.
(3) 
Administer the work of the department through the divisions established by this chapter and such other units of administration as he or she may find necessary or desirable.
(4) 
Appoint officers and employees employed within the department and assign functions, powers and duties to them.
(5) 
Delegate such of his or her powers as he or she may deem necessary for the efficient administration of the department, to be exercised under his or her direction and supervision by division heads.
B. 
Said supervision and required reports shall not extend or apply to the Department of Law or to the office of the City Clerk and shall not extend or apply to the exercise of the control function in the management of the finances of the City, which control function is required by statute (N.J.S.A. 40:69A-48) to be exercised by an officer of the City other than the Business Administrator.
Whenever a vacancy exists, by resignation, removal or otherwise, in the office of a Director of any City department, the Mayor may temporarily fill such vacancy in cases not specifically provided for in the Charter or ordinances by appointing an Acting Director from among the existing officers and employees of the City, who shall perform all the duties and functions of such department head, until the office shall be filled permanently. Any such appointment of an Acting Director shall terminate not later than 90 days after the date of the appointment, unless the Council shall, by resolution, authorize one or more extensions thereof.
Whenever any administrative officer or the head of any administrative department or division thereof is, by reason of absence or disability, unable to perform his or her official duties, one or more officers or employees under his or her supervision whom he or she has designated may perform the ministerial duties of such office during such time as the absence or disability of the officer may continue. It shall be the duty of the head of each department and division to designate one or more such persons. When any person so designated to perform the duties of an officer during his or her absence or disability is required to sign any official document pertaining to such office, it shall be signed in the name of such officer and by the subordinate as designee.