(A) Intervention of right. Upon timely motion anyone shall be permitted to intervene in an action: (1) when a statute confers an unconditional right to intervene; or (2) when the applicant claims an interest relating to a property, fund or transaction which is the subject of the action and he is so situated that the disposition of the action may as a practical matter impair or impede his ability to protect his interest in the property, fund or transaction, unless the applicant's interest is adequately represented by existing parties. (B) Permissive intervention. Upon timely filing of his motion anyone may be permitted to intervene in an action: (1) when a statute confers a conditional right to intervene; or (2) when an applicant's claim or defense and the main action have a question of law or fact in common. When a party to an action relies for ground of claim or defense upon any statute or executive order administered by a federal or state governmental officer or agency or upon any regulation, order, requirement, or agreement issued or made pursuant to the statute or executive administrative order, the governmental unit upon timely application may be permitted to intervene in the action. In exercising its discretion the court shall consider whether the intervention will unduly delay or prejudice the adjudication of the rights of the original parties. (C) Procedure. A person desiring to intervene shall serve a motion to intervene upon the parties as provided in Rule 5. The motion shall state the grounds therefor and set forth or include by reference the claim, defense or matter for which intervention is sought. Intervention after trial or after judgment for purposes of a motion under Rules 50, 59, or 60, or an appeal may be allowed upon motion. The court's determination upon a motion to intervene shall be interlocutory for all purposes unless made final under Trial Rule 54(B). Amended Nov. 21, 1980, effective 1/1/1981.