(a) Appear by counsel, or other authorized representative, in all hearing proceedings;

(b) Participate in any prehearing conference held by the presiding officer;

(c) Agree to stipulations of facts which will be made a part of the record;

(d) Make opening statements at the hearing;

(e) Present relevant evidence on the issues at the hearing;

(f) Present witnesses who then must be available for cross-examination by all other parties;

(g) Present oral arguments at the hearing; and

(h) Submit written briefs, proposed findings of fact, and proposed conclusions of law, after the hearing.