640. (1) If more than one liquidator is appointed, the court or meeting appointing those liquidators, shall declare or resolve whether any thing by this Act required or authorised to be done by the liquidators is to be done by all or any one or more of the persons appointed.

(2) In default of such declaration or resolution, those things may be performed by any number of the liquidators but, in any case, by not less than 2 of them.