21. (1) Subject to subsection (4), the Tribunal may receive evidence given—

(a) orally before the Tribunal,

(b) by affidavit, or

(c) as otherwise directed by the Tribunal or allowed by its Rules and procedures, including by means of a live video link, a video recording, a sound recording or any other mode of transmission.

(2) A witness who attends before the Tribunal to give evidence may be required to give evidence on oath or affirmation.

(3) Any member of the Tribunal or any member of staff of the Tribunal duly authorised by the Tribunal to do so may administer any oaths or take any affirmations necessary for the purposes of the Tribunal’s functions.

(4) A witness who gives evidence otherwise than by attending in person before the Tribunal or by means of a live video link shall provide the Tribunal with a sworn statement in a form acceptable to the Tribunal indicating that—

(a) the evidence was given by him or her,

(b) the evidence was given voluntarily, and

(c) to the best of his or her knowledge, the content is true and accurate.