(1) Rule 303 applies to an application under the Variation of Trusts Act 1994 .(2) In relation to an application under the Variation of Trusts Act 1994 , a judge, instead of making an order under rule 303 , may (a) order that the interests of any unascertained person or class of persons be represented by a practitioner appointed by the judge; and(b) make provision for the costs of such representation.