70 ILCS 1830/32
The Governor, by and with the advice and consent of the Senate, shall appoint the members of the Board and fill any and all vacancies. If the Senate is in recess when such appointment is made, the Governor shall make a temporary appointment until the next meeting of the Senate. Of the members initially appointed by the Governor, 3 were appointed for initial terms expiring July 1, 1966, 3 for initial terms expiring July 1, 1967 and 3 for initial terms expiring July 1, 1968. Those appointments are not affected by this amendatory Act of 1967; however, within 60 days after this amendatory Act of 1967 takes effect, the Governor shall appoint 6 additional members to the Board. Of such members appointed, 2 shall be appointed for initial terms expiring July 1, 1968, 2 for initial terms expiring July 1, 1969, and 2 for initial terms expiring July 1, 1970. At the expiration of the term of any member, his successor shall be appointed by the Governor in like manner and with like regard to place of residence of the appointee.
70 ILCS 1830/32