415 ILCS 5/26

The Board may adopt such procedural rules as may be necessary to accomplish the purposes of this Act. In adopting such rules the Board shall follow the rulemaking procedures of the Illinois Administrative Procedure Act.

Without limiting the generality of this grant of authority, and notwithstanding any requirement that hearings be held in actions brought pursuant to Titles VIII and X of the Act, the Board may adopt procedural rules for resolution of such actions by summary judgment prior to hearing upon motion by either party except as otherwise required by federal law, as well as procedural rules requiring the parties to perfect their pleadings to conform to the evidence as presented to the Board.