65 ILCS 5/11-13-22

In a municipality of less than 500,000 inhabitants, the corporate authorities may adopt or authorize the zoning board of appeals and any other board, commission, or committee that conducts public hearings under this Division to adopt rules of procedures governing those public hearings. The rules of procedures may concern participation in public hearings and the participants' rights to cross examine witnesses and to present testimony and evidence, and any other relevant matter.