(1) The hearing officer or their designee must serve a notice of a formal administrative hearing to all parties and their representatives at least twenty-one calendar days before the hearing date. The parties may agree to, but the hearing officer cannot impose, a shorter notice period.

(2) If a prehearing conference or dispositive motion hearing is scheduled, the hearing officer must serve a notice of the prehearing conference or dispositive motion hearing to the parties and their representatives at least seven business days before the date of the prehearing conference or dispositive motion hearing except:

(a) The hearing officer may change any scheduled formal administrative hearing into a prehearing conference or dispositive motion hearing and provide less than seven business days' notice of the prehearing conference or dispositive motion hearing; and

(b) The hearing officer may give less than seven business days' notice if the only purpose of the prehearing conference is to consider whether to grant a continuance.

(3) The hearing officer must reschedule a formal administrative hearing if necessary to comply with the notice requirements in Part III of this chapter.