At the head of each department there shall be a part time or full time director who shall be appointed by the Manager and who shall serve at the pleasure of the Manager, and may be removed, without cause, by the Manager. Two or more departments may be headed by the same person and the Manager may serve as the director of one or more departments in addition to his duties as Manager, if Council approves by a majority vote of its members. Each director shall be an administrative officer of the Municipality. The Director shall have supervision and control of the department he or she heads subject to the direction of the Manager. The Manager may appoint a person to serve as an acting department head in the event of a vacancy or the temporary absence or disability of a department head.