705 ILCS 25/18

The appellate court shall sit at the places prescribed by rule of the Supreme Court. Where necessary, the judges of any division may rent suitable rooms for the holding of court and for the use of the officers thereof at a rental not exceeding the amount appropriated therefor from time to time by the General Assembly; and the judges of the respective branches of the appellate court shall order all necessary furniture therefor, and for the safekeeping of the records of the court and for moving expenses; the accounts therefor shall be certified by the respective branches of the court to the State Comptroller, who shall draw his warrant on the state treasury for the amount of the same, to be paid out of the appropriation that shall be made therefor.