|(a) A motion, unless made during a hearing, shall be made in writing, shall set forth the relief or order sought, and shall be timely filed with the chief clerk. Any reply to the motion shall be timely filed with the chief clerk with copies served on the judge and other parties. Failure to furnish copies may be grounds for withholding consideration of the motion or reply. Motions based on matters which do not appear of record must be supported by affidavit. (b) Motions made during a hearing shall be stated on record or filed with the judge. (c) When necessary in the judgment of the judge or commission, a hearing will be held to consider any motion.