(1) The appointing parties must give the expert a statement of facts, agreed to by the appointing parties, on which to base the report.
(2) However, if the appointing parties do not agree on a statement of facts, then—(a) unless the court directs otherwise, each of the appointing parties must give the expert a statement of facts on which to base the report; and(b) the court may give directions about the form and content of the statement of facts to be given to the expert.