(a) Except as otherwise provided in this part, any application for an order or other relief shall be made by motion. Except when made orally before the Board, motions shall be in writing and shall be accompanied by proof of service on all other parties. If a motion is supported by briefs, affidavits, or other papers, they shall be served and filed with the motion. Any party may respond to the motion within such time as may be provided by the Board.

(b) Requests for extension of time as to the filing of papers or oral presentation shall be in the form of a motion under paragraph (a) of this section.