6—(1) Subject to any provision of this Act or of rules under section 21, the procedure and conduct of the inquiry are to be such as the chairperson may direct.
(2) In particular, the chairperson may take evidence on oath, and for that purpose may administer oaths.
(3) Subject to any provision of rules under section 21, a statement made to the inquiry on oath by a person outside Northern Ireland through a live link is to be treated for the purposes of Article 3 of the Perjury (Northern Ireland) Order 1979 as having been made in Northern Ireland.
(4) In making any decision as to the procedure or conduct of the inquiry, the chairperson must act with fairness and with regard also to the need to avoid any unnecessary cost (whether to public funds or to witnesses or others).
(5) In this section “live link” means a live television link or other arrangement whereby a person, while absent from the place where the inquiry is being held, is able to see and hear, and be seen and heard by, a person at that place.
(6) For the purposes of subsection (5) any impairment of sight or hearing is to be disregarded.