The board as a body shall:
(1) Adopt and amend rules and regulations for the administration of this part;
(2) Make investigations concerning the enforcement and effect of this part and require observance of the rules and regulations made thereunder;
(3) Hear and determine appeals and complaints respecting the administration of this part;
(4) Establish and maintain a roster of all employees of the classified service and the office of the sheriff showing their position, rank, compensation and place of residence;
(5) Ascertain and record the duties and responsibilities pertaining to all positions in the classified service and classify such positions in the manner hereinafter provided;
(6) Except as otherwise provided in this part, formulate and hold competitive tests to determine the qualifications of persons who seek employment in any position, and as a result of such tests, establish employment lists of eligibles for the various positions;
(7) Establish records of performance and a system of service ratings to be used to determine promotions, the order of layoffs and reemployment and for other purposes;
(8) Keep any other such records as may be necessary for the proper administration of this part; and
(9) Determine all fringe benefits to employees coming under the provisions of this part.