10 ILCS 5/19-15
If the election authority has adopted the use of Precinct Tabulation Optical Scan Technology voting equipment pursuant to Article 24B of this Code, and the provisions of the Article are in conflict with the provisions of this Article 19, the provisions of Article 24B shall govern the procedures followed by the election authority, its judges of elections, and all employees and agents, provided that vote by mail ballots are counted at the election authority's central ballot counting location. In following the provisions of Article 24B, the election authority is authorized to develop and implement procedures to fully utilize Precinct Tabulation Optical Scan Technology voting equipment, at the central ballot counting location, authorized by the State Board of Elections as long as the procedure is not in conflict with either Article 24B or the administrative rules of the State Board of Elections.
10 ILCS 5/19-15