(a) In proceedings under this subchapter an individual Party may appear in person, a corporate Party by an officer or employee thereof, a partnership or joint venture Party by an authorized member or employee thereof, or any of these by a member in good standing of the State Bar of California.

(b) The Public Agency shall appear in proceedings under this subchapter either by its authorized counsel or other person authorized to act on behalf of the agency.

(c) Upon motion pursuant to Section 1361, a member in good standing of the State Bar of California who is counsel of record for a Party may in the discretion of the Arbitrator associate out-of-state counsel provided there has been compliance with the requirements of California Code of Civil Procedure section 1282.4 which sets forth the conditions for pro hac vice admission to arbitration in California.

(d) Parties shall at all times keep the Office of Administrative Hearings and each other currently advised as to any change, addition or substitution of representation or any change in the address or telephone number of its representative(s).