Section 25.503 - Parties to support proceedings; notice(1) In any proceeding under ORS 25.501 to 25.556, the following are parties and shall be given notice of any such proceeding by the administrator: (b) An obligee who has physical custody of a child for whose benefit a support order or an order establishing paternity is sought, is being modified or is being enforced under ORS 25.501 to 25.556.(c) A noncustodial parent or a male who is alleged to be the father of a child when an action is initiated under ORS 25.501 to 25.556 to establish, modify or enforce a support or paternity order.(d) A person joined as a party under subsection (2) of this section.(2) Pursuant to administrative rule, a party may join a person who has physical custody of a child to a proceeding under ORS 25.501 to 25.556.