(1)    When more than one arbitrator is agreed to, all of the arbitrators shall hear the case unless all parties agree in writing to proceed with a lesser number.

   (2)   Any arbitrator may issue a subpoena under ch. 885 or may furnish blank forms therefor to a representative for any party to the arbitration. The representative may issue a subpoena under s. 805.07. The arbitrator or representative who issues the subpoena shall sign the subpoena and provide that the subpoena is served as prescribed in s. 805.07 (5). If any person so served neglects or refuses to obey the subpoena, the issuing party may petition the circuit court for the county in which the hearing is held to impose a remedial sanction under ch. 785 in the same manner provided for witnesses in circuit court. Witnesses and interpreters attending before an arbitration shall receive fees as prescribed in s. 814.67.