98 (2) Members of the Civil Service Commission must be chosen for their knowledge of or experience in administration, management or the provision of public services. 10.5 Functions of Civil Service Commission (1) The Civil Service Commission has the following functions— (a) to appoint qualified and competent persons to hold posts in the Civil Service; (b) to fix and regulate conditions of service, including salaries, allowances and other benefits, of members of the Civil Service; (c) to exercise control and disciplinary powers over members of the Civil Service; (d) to investigate grievances and to remedy the grievances of members of the Civil Service concerning official acts or omissions; (e) to implement measures to ensure effective and efficient performance within, and the general well-being of, the Civil Service; (f) to ensure that members of the Civil Service carry out their duties efficiently and impartially; (g) to exercise any other function that is conferred or imposed on the Commission by this Constitution or an Act of Parliament; (h) to advise the President and the Minister on any matter relating to the Civil Service; and (i) to promote throughout the Civil Service the values and principles set out in this Constitution. (2) The Civil Service Commission, with the approval of the Minister responsible for the Public Service, may make regulations for any of the purposes set out in subsection (1). (3) The Civil Service Commission must exercise its functions in accordance with any general written policy directives which the Minister responsible for the Civil Service may give it. (4) In fixing the salaries, allowances and other benefits of members of the Civil Service, the Civil Service Commission must act with the approval of the President given on the recommendation of the Minister responsible for finance and after consultation with the Minister responsible for the Civil Service. 10.6 Ambassadors and other principal representatives of Zimbabwe The President may appoint persons to be ambassadors or other principal representatives of Zimbabwe in other countries or to be accredited to international organisations and may, at any time, remove those persons from their posts. 10.7 Permanent Secretaries (1) Permanent Secretaries of Ministries are appointed by the President after consultation with the Civil Service Commission. (2) The term of office of a Permanent Secretary is a period of up to five years, and is renewable once only subject to competence, performance and delivery.