For assessing costs, an assessing registrar may do any of the following—
(a) administer an oath or receive an affirmation;
(b) examine witnesses;
(c) if satisfied there is or may be a conflict of interest between the solicitor and the party—require the party to be represented by another solicitor;
(d) unless the court orders otherwise—extend or shorten the time for taking any step in the assessment;
(e) direct or require a party to produce documents;
(f) give directions about the conduct of the assessment process;
(g) anything else the court directs.