(1) A witness who cannot hear adequately may be questioned in any appropriate way.
(2) A witness who cannot speak adequately may give evidence by any appropriate means.
(3) The court may give directions concerning either or both of the following—
(a) the way in which a witness may be questioned under subsection (1);
(b) the means by which a witness may give evidence under subsection (2).
(4) This section does not affect the right of a witness to whom this section applies to give evidence about a fact through an interpreter under section 30.