Rule 2.16 Allegation against third person in pleading
(1)
Rules 2.7 and 2.9 shall apply, with the necessary modifications, to a pleading other than a petition as they apply to a petition, so however that for the references in those rules to a co-respondent there shall be substituted references to a party cited.
(2)
Rule 2.12 shall apply, with the necessary modifications, to a party cited as it applies to a co-respondent.