(1) After a hearing has been scheduled pursuant to RCW 46.25.120(5), it may be continued, rescheduled, or adjourned only at the discretion of the hearing officer.

(2) A hearing officer must continue a hearing scheduled pursuant to RCW 46.25.120(5) in the event a law enforcement officer whose attendance is required fails to appear. A hearing continued under this subsection must be adjourned until such time as the officer may be compelled to attend by issuance of a subpoena under RCW 46.20.332. A subpoena issued to compel the attendance of an officer is subject to enforcement under RCW 7.21.060.