The Governor shall appoint a State Agency of Vocational Rehabilitation to be composed of seven members, and this agency shall provide for the administration of this chapter. The members of the agency shall consist of one member from each congressional district. The Governor, upon the advice and consent of the Senate, shall appoint the members. The members shall serve a term of seven years. The terms of office must always remain staggered so that the term of one member expires every year with appointments to fill unexpired terms caused by death, resignation, or disability.