Ala. Code § 11-50-462
The governing body of such municipality shall elect the members of the board. Immediately upon the creation and establishment of the board, the governing body of such municipality shall proceed to elect one member to serve until July 1 of the next ensuing year and until his successor is elected and qualified, one member to serve until July 1 of the second ensuing year and until his successor is elected and qualified and one member to serve until July 1 of the third ensuing year and until his successor is elected and qualified.
At the first regular meeting of the governing body of such municipality in the month of June of each year, the said governing body shall elect a successor of the member of the board whose term expires on July 1 following, and the person so elected shall become a member of the board on July 1 following and shall hold such position for a period of three years and until his successor is elected and qualified. Should such governing body fail to elect a member at its first meeting in the month of June, it shall do so at any succeeding regular meeting of such governing body. A member of the board may succeed himself if the governing body of such municipality desires to reelect him.
Whenever a vacancy occurs in the membership of the board by resignation, death, or any other cause, the governing body of such municipality shall immediately fill said vacancy by electing another person to membership on the board, who shall serve for the remainder of the unexpired term of the member he succeeds and until his successor is elected and qualified.
Ala. Code § 11-50-462 (1975)