(1) A respondent may make a cross-claim against a person other than the applicant (whether or not already a party to the proceeding) if:
(a) the applicant is also made a party to the cross-claim; and
(b) either:
(i) the respondent alleges that the other person is liable with the applicant for the subject matter of the cross-claim; or
(ii) the respondent claims against the other person relief relating to or connected with the subject matter of the original proceeding.
(2) If a respondent makes a cross-claim against a person who is not a party to the original proceeding, the respondent must serve the response and cross-claim and the applicant's application on the person.
(3) A person who is not a party to the original proceeding and is included as a respondent to a cross-claim becomes a party to the proceeding on being served with the response and cross-claim.
(4) If a respondent makes a cross-claim against a person who is not a party to the original proceeding, these Rules apply as if:
(a) the cross-claim were an application; and
(b) the party making the cross-claim were an applicant; and
(c) the party against whom the cross-claim is made were a respondent.