(a) When to file. All papers required to be served by a party upon any person shall be filed with the Commissioner at the time of service or promptly thereafter. Papers required to be filed with the Commissioner must be received within the time limit, if any, for such filings.

(b) Where to file. Filing of papers with the Commissioner shall be made by filing the original papers with the Commissioner and one (1) copy with the hearing officer.

(c) To whom to direct the filing. All motions, objections, applications or other filings made during a proceeding shall be directed to and decided by the hearing officer.

(d) Certificate of Service. Papers filed with the Commissioner and the hearing officer shall be accompanied by a certificate stating the name of the person or persons served, the date of service, the method of service and the mailing address or facsimile telephone number to which service was made, if not made in person.