Rules of court may make such provision as appears to the authority making them to be necessary or expedient for the purposes of this Part.
Without limiting subsection (1), rules of court may in particular make provision—
for time limits which are to apply in connection with any provisions of this Part,
as to procedures to be applied in connection with this Part,
enabling a single judge of the Court of Appeal to give leave to appeal under this Part or to exercise the power of the Court of Appeal under section 58(12).
Nothing in this section is to be taken as affecting the generality of any enactment conferring powers to make rules of court.