(1)Where the special measure to be used is a screen, the screen must be used to conceal the parties to the proceedings from the sight of the vulnerable witness in respect of whom the special measure is to be used.
(2)However, the court must make arrangements to ensure that the parties are able to watch and hear the vulnerable witness giving evidence.
(3)Subsections (2) and (3) of section 20 apply for the purposes of use of a screen under this section as they apply for the purposes of use of a live television link under that section but as if—
(a)references to the live television link were references to the screen, and
(b)the reference to receiving such a link were a reference to the use of a screen.