(1) The registrar may give directions about—
(a) who must be served with a bill of costs; and
(b) who should attend or be represented when the registrar is assessing costs.
(2) If the registrar considers a person's attendance at an assessment is unnecessary, the registrar may disallow the costs of the person's attendance.
(3) This rule does not prevent a person affected by an assessment attending the assessment.
(4) If the registrar gives a direction under subrule (1) (a) and costs are payable by a fund, the party entitled to costs must also serve a notice—
(a) identifying the fund; and
(b) stating that the costs in the bill of costs are payable by the fund; and
(c) stating when the costs are to be assessed; and
(d) containing any other information the registrar requires to be included in the notice.