Uniform Civil Procedure Rules 2005
Current version for 9 April 2020 to date (accessed 2 June 2020 at 06:28)
Part 6 Division 5 Rule 6.21
6.21   Proceedings affecting persons having joint or several liability
(cf SCR Part 8, rule 5; DCR Part 7, rule 5; LCR Part 6, rule 5)
(1)  A person who is jointly and severally liable with some other person in relation to any act, matter or thing need not be a defendant in proceedings with respect to that act, matter or thing merely because the other person is a defendant in those proceedings.
(2)  In any proceedings in which a defendant is one of a number of persons who are jointly, but not severally, liable in contract or tort, or under an Act or statutory instrument, the court may order that the other persons be joined as defendants and that the proceedings be stayed until those other persons have been so joined.