(a) All documents a party files with SOAH shall be governed by the provisions of 1 TAC §155.101 (relating to Filing Documents).(b) All documents a party files with SOAH shall be simultaneously served on the other parties. Service of documents on parties shall be governed by the provisions of 1 TAC §155.103 (relating to Service of Documents on Parties).(c) Except as provided herein, any oral or written communication, other than a communication authorized under subsection (a) of this section, from the parties to an arbitrator shall be directed to the association that is conducting the arbitration or, if there is no association conducting the arbitration, to SOAH, for transmittal to the arbitrator. After the arbitrator has been appointed in a case, materials may be filed directly with the arbitrator, if:(1) the parties agree;(2) the arbitrator agrees; and(3) the service requirements of this section are met.