221Joinder, waiver, and extension of time

1. In order to enable the court or the Authority, as the case may be, to more effectually dispose of any matter before it according to the substantial merits and equities of the case, it may, at any stage of the proceedings, of its own motion or on the application of any of the parties, and upon such terms as it thinks fit, by order,—

2. direct parties to be joined or struck out; and
3. amend or waive any error or defect in the proceedings; and
4. subject to section 114(4), extend the time within which anything is to or may be done; and
5. generally give such directions as are necessary or expedient in the circumstances.