(1) To the extent practicable and not inconsistent with this Part:
(a) the parties must conduct a cross-claim in the same way as the principal proceeding; and
(b) these Rules apply to the cross-claim in the same way as they apply to the principal proceeding; and
(c) the trial or a hearing, or any other step, in relation to the cross-claim is to be carried out at the same time as the trial or hearing, or any other step, in relation to the originating application.
(2) For the purpose of giving effect to this rule:
(a) a cross-claimant is to be treated as an applicant; and
(b) a cross-respondent is to be treated as a respondent.