appointment, and at least one of them must have held senior rank in the Police Service for one or more periods amounting to at least five years. (3) The Police Service Commission has the functions that are conferred or imposed on it by this Constitution or an Act of Parliament, and these functions may include– (a) appointing persons to hold posts or ranks in the Police Service; (b) fixing and regulating conditions of service of members of the Police Service; (c) determining the nature of disciplinary powers to be exercised over members of the Police Service, and the manner and circumstances in which they are to be exercised; (d) ensuring the general well-being and administration of the Police Service and its maintenance in a high state of efficiency; (e) making regulations for any of the purposes set out in this subsection. CHAPTER XII PRISON SERVICE 197 Prison Service and its function There is a Prison Service of Zimbabwe, which is responsible for– (a) the administration of prisons in Zimbabwe; and (b) the protection of society from criminals through the incarceration and rehabilitation of offenders and their re-integration into society. 198 Commissioner of Prisons (1) The Prison Service is under the command of a Commissioner of Prisons appointed by the President. (2) The Commissioner of Prisons must exercise his or her command in accordance with general directions of policy given by the Minister responsible for prisons. 199 Organisation and administration of Prison Service An Act of Parliament must provide for the organisation, administration and discipline of the Prison Service, including the appointment of persons to offices or ranks in the Prison Service, their removal from office or reduction in rank, their punishment for breaches of discipline and the fixing of their conditions of service. 200 Prison Service Commission (1) There is a Prison Service Commission consisting of– (a) a chairperson, who must be the chairperson of the Public Service Commission or his or her delegate; and (b) at least two and not more than seven other members appointed by the President. (2) Persons appointed to the Prison Service Commission must be chosen for their ability and experience in administration or their professional qualifications or their general suitability for appointment, and at least one of them must have held senior rank in the Prison Service for one or more periods amounting to at least five years. (3) The Prison Service Commission has the functions that are conferred or imposed on it by this Constitution or an Act of Parliament, and these functions may include— - 74 -