1A party to the administrative procedure, save for what is provided in Article 3 of this Code, shall be any person:
aupon whose request the administrative procedure has been initiated;
bagainst whom an administrative procedure has started, or to whom the decision of the administrative procedure is addressed or intended to be addressed; or
cwith whom the public organ intends to conclude or has already concluded an administrative contract.
2A party to the administrative procedure are also the holders of public interests authorized by law, as well as holders of collective interests or of broad interests of the public, in case these interests might be affected by the outcome of the administrative procedure.
3The public organ conducting the administrative procedure, shall either ex officio or upon request, include as a party to the administrative procedure, any other person defined or easily definable, other than those provided for by paragraph 1 and 2 of this article, whose lawful rights or interests might be affected by the outcome of the administrative procedure.