(1) A respondent to an appeal or an independent children's lawyer who intends to argue that an order under appeal should be varied or set aside must cross - appeal by filing a Notice of Appeal endorsed as a cross - appeal.
(2) A Notice of Appeal for a cross - appeal must be filed within the later of the following:
(a) 14 days after the Notice of Appeal for the appeal was served on the cross - appellant;
(b) 28 days after the date the order appealed from was made.