[With regard to any county that is required to operate on a countywide system of road administration as described in Section 19-2-3, this section shall read as follows:]

The board of supervisors of each county shall appoint some person other than a member of such board to serve as county administrator. The board of supervisors may appoint the chancery clerk of the county as county administrator if the chancery clerk agrees to serve as county administrator, or the board may appoint as county administrator some other person who has knowledgeable experience in any of the following fields: work projection, budget planning, accounting, purchasing, cost control or personnel management. If the chancery clerk is appointed to serve as county administrator, the board of supervisors, with the approval of the chancery clerk, may appoint the chancery clerk also to serve as the county purchase clerk, an assistant purchase clerk, the inventory control clerk or any combination of such positions, but no chancery clerk who serves as county administrator shall also serve as the county road manager or a receiving clerk or an assistant receiving clerk for the county. If some person other than the chancery clerk is appointed to serve as county administrator, the board of supervisors may appoint such person also to serve as (a) inventory control clerk; (b) inventory control clerk and county road manager; or (c) inventory control clerk and county purchase clerk; but such person shall not serve as both county administrator and as a receiving clerk or an assistant receiving clerk for the county.

Notwithstanding any provisions of this section to the contrary, in any county having a population of less than three thousand (3,000) according to the latest federal decennial census, the board of supervisors, with the approval of the chancery clerk, may appoint the chancery clerk also to serve as the county administrator, the county purchase clerk, an assistant purchase clerk, the receiving clerk, an assistant receiving clerk, and the inventory control clerk, or any combination of such positions.

The county administrator, under the policies determined by the board of supervisors and subject to the board’s general supervision and control, shall administer all county affairs falling under the control of the board and carry out the general policies of the board in conformity with the estimates of expenditures fixed in the annual budget as finally adopted by the board or as thereafter revised by appropriate action of the board.

The boards of supervisors of at least two (2) but no more than five (5) counties may, by agreement executed under the Interlocal Cooperation Act of 1974, employ the same person to serve them as county administrator; however, a chancery clerk may not be appointed to serve as administrator for more than one (1) county nor for any county other than the county for which he serves as chancery clerk.

The State Auditor shall prescribe a course of continuing education for county administrators to keep them knowledgeable about their duties and responsibilities with respect to administering the affairs of the county. At least one (1) training session shall be held annually.