Miss. Code § 21-29-105
The Board of Trustees of the Public Employees' Retirement System of Mississippi shall have operational and administrative control of the funds created herein.
In each municipality there shall be a board to serve in an advisory capacity to the Board of Trustees of the Public Employees' Retirement System with respect to matters concerning the disability and relief fund. Such board shall consist of five (5) members as follows: two (2) shall be elected by the membership of the police department, two (2) shall be elected by the membership of the fire department; and the mayor or his designee shall be an ex officio member. Retired members of the police department and fire department may participate in elections to choose members of the board, and such retired members are also eligible to serve on the board. The term of elected members shall be for four (4) years, and any vacancy in the elected membership shall be filled in the same manner as the original membership was selected.
Miss. Code § 21-29-105