Administrative Procedure Act Article 27

In the case of a multiple number of parties with common interest, who have not made a joint appointment of agents, they may elect from among them one to five parties to act for and on behalf of all of them in the administrative procedure.If no such a party or parties are elected, and the administrative authority believes that the normal process of the procedure will thus be hampered, it may order that such a party or parties be elected within a specified time limit; failure to do so upon the lapse of the time limit shall entitle the administrative authority to assign ex officio one or more parties.An elected or assigned party may not resign or give up the post without a good cause.Where there are one or more elected or assigned parties, only such party or parties shall have the power to act in the administrative procedure, and all other parties shall secede from the administrative procedure; provided, however, that withdrawal of application, waiver of any right or assumption of any obligation may be made only with the unanimous consent of all persons having common interest.