(1)  On demand in writing by a defendant, a formal coplaintiff is to declare in writing the names and addresses of all the persons constituting the society on whose behalf the action is brought.

(2)  If a formal coplaintiff fails to comply with a demand under subrule (1) and no other formal coplaintiff complies with a similar demand, on the application of the defendant making the demand, the Court or a judge may direct all proceedings in the action to be stayed.

(3)  A direction may be on any terms.

(4)  If a formal coplaintiff complies with a demand under subrule (1) , the action is to proceed –

(a) as if the persons declared had been named as plaintiffs in the writ; and

(b) in the names of the society and each coplaintiff.