The Public Service Commission shall appoint—
(a) a principal officer, who shall organize and supervise the probation service in accordance with rules made under section 1173;
(b) a sufficient number of probation officers, qualified by character and experience to be probation officers, who shall perform such duties as may be prescribed by section 1173;
(c) a Probation Case Committee or Probation Case Committees, consisting of the persons as the Commission shall think fit, who shall review the work of probation officers in individual cases and perform such other duties in connection with probation as may be prescribed by rules under section 1173.