Paragraph 22 Filing of acknowledgement by respondent
(1)
Each respondent who intends to participate in the appeal must file notice of intention to participate.
(2)
The notice of intention to participate in the appeal must be filed within 21 days after—
(a)
service of the notice of intention to proceed under rule 19(2); or
(b)
service of the notice of appeal under rule 21(2).
(3)
A respondent who wishes to argue that the order appealed from should be upheld on grounds different from those relied on by the court below, must state that clearly in the notice of intention to participate (but need not cross-appeal).