The Mississippi Library Commission shall be responsible for developing a system of public service incentives within a public library accreditation program on the recommendation of a committee of qualified public library professionals and trustees. The committee of fifteen (15) members shall be appointed by the Mississippi Library Commission Board of Commissioners as follows: seven (7) public library trustees with at least one (1) from each congressional district; five (5) professional public librarians, one (1) appointed by each commissioner; and three (3) at-large members.