In this Division –

formal codefendant means a person –

(a) joined as a codefendant as an officer of a society under rule 320(1) or whose name is added to a writ under an order made under rule 320(4) or rule 326(3)(b) ; and

(b) against whom remedy or relief is not sought otherwise than as a member of the society;

formal coplaintiff means a person –

(a) joined as a coplaintiff as an officer of a society under rule 320(1) ; and

(b) for whom remedy or relief is not sought otherwise than as a member of the society.