5. For the fixing and regulation by boards of supervisors, by ordinance, of the appointment and number of assistants, deputies, clerks, attachés and other persons to be employed, from time to time, in the several offices of the county, and for the prescribing and regulating by such boards of the powers, duties, qualifications and compensation of such persons, the times at which, and terms for which they shall be appointed, and the manner of their appointment and removal; and 6. For the compensation of such fish and game wardens, probation and other officers as may be provided by general law, or for the fixing of such compensation by boards of supervisors. All elective officers of counties, and of townships, of road districts and of highway construction divisions therein shall be nominated and elected in the manner provided by general laws for the nomination and election of such officers. All charters framed under the authority given by this section, in addition to the matters herein above specified, may provide as follows: For offices other than those required by the Constitution and laws of the State, or for the creation of any or all of such offices by boards of supervisors, for the election or appointment of persons to fill such offices, for the manner of such appointment, for the times at which and the terms for which such persons shall be so elected or appointed, and for their compensation, or for the fixing of such compensation by boards of supervisors. For offices hereafter created by this constitution or by general law, for the election or appointment of persons to fill such offices, for the manner of such appointment, for the times at which and the terms for which such persons shall be so elected or appointed, and for their compensation, or for the fixing of such compensation by boards of supervisors.