(a) General. Motions shall state the relief sought and the authority relied upon. If made before or after the hearing, the motion shall be in writing and filed with the hearing clerk with a copy to all parties. If made at the hearing, they should be stated orally but the hearing officer may require that any motion be reduced to writing and filed and served on all parties in the same manner as a formal motion.

(b) Extension of time or postponement. A request for an extention of time should be filed and served on all parties and should set forth the reasons for the request and may be granted upon a showing of good cause. Answers to such requests are permitted, if made promptly.