(1) A party that intends to present the evidence of an expert at a trial is to serve on each other party (a) a report containing the evidence; and(b) a statement signed by the expert containing an acknowledgement by the expert that he or she (i) has read and understood the Expert Witness Code of Conduct; and(ii) has complied with, and will continue to comply with, the Expert Witness Code of Conduct; and(iii) will comply with any order made under subrule (4) .(2) The report and signed statement are to be served, jointly (a) on or before the date fixed by order of a judge, being a date before the trial; or(b) if no such date is so fixed, within a reasonable time before the commencement of the trial.(3) Where the party (or the party's legal representative) is to serve the revised report on each other party to the proceeding as soon as practicable.(a) a party to a proceeding receives a report from an expert witness containing a change of opinion on a material matter ( revised report ); and(b) the revised report relates to a report and signed statement that the party has served under subrule (2) in the same proceeding (4) If 2 or more parties to a proceeding intend to call experts to give opinion evidence about a similar question, the Court or a judge may, either on or without application, make one or more of the following orders:(a) that all factual evidence relevant to the opinion of any expert be adduced before the expert is called to give evidence;(b) that on the completion of the factual evidence pursuant to any order made under paragraph (a) , each expert provide a supplementary report (i) stating whether the expert adheres to his or her previously expressed opinion or holds a different opinion; and(ii) further stating, if applicable, the different opinion and the factual evidence on which it is based;(c) that each expert give an opinion about the opinion of any other expert;(d) any other order convenient to the manner in which the opinion evidence is received.