18.—(1) The First-tier Tribunal may, for the purposes of making inquiries, require the property factor, the homeowner or any other person—
(a)to attend a hearing of the First-tier Tribunal at such time and place as the First-tier Tribunal may specify for the purposes of giving evidence;
(b)to give the First-tier Tribunal, by such day as it may specify, such documents or information as it may reasonably require.
(2) Paragraph (1) does not authorise the First-tier Tribunal to require any person to answer any question or to disclose anything which the person would be entitled to refuse to answer or disclose on grounds of confidentiality in civil proceedings in a court in Scotland.
(3) Where the First-tier Tribunal has set time limits for the lodging and serving of written evidence, it must not consider any written evidence which is not lodged or served in accordance with those time limits unless satisfied that there is good reason to do so.
(4) Where a party seeks to rely upon a copy of a document as evidence, the First-tier Tribunal may require the original document to be produced.