(1) Each Department of the University shall have a Head who shall be a Professor or Director and whose duties and functions and terms and conditions of appointment shall be such as may be prescribed by the ordinances:
Provided that if there is more than one Professor in any Department, the Head of the Department shall be appointed in the manner prescribed by the ordinances:
Provided further that in a Department where there is no Professor, [an Associate Professor or an Assistant Professor] may be appointed as Head of the Department in the manner prescribed by the ordinances.
(2) It shall be open to a Professor or [an Associate Professor or an Assistant Professor] to decline the offer of appointment as Head of the Department.
(3) A person appointed as Head of the Department shall hold office as such for a period of three years and shall be eligible for reappointment.
(4) A Head of the Department may resign his office at any time during his tenure of office.
(5) A Head of the Department shall perform such functions as may be prescribed by the ordinances.