24.—(1) At any time before it is determined, an applicant may withdraw an application to a Commissioner for leave to appeal against a decision of an appeal tribunal by giving written notice to a Commissioner.
(2) At any time before the decision is made, the appellant may withdraw his appeal with the leave of a Commissioner.
(3) A Commissioner may, on application by the party concerned, give leave to reinstate any application or appeal which has been withdrawn in accordance with paragraphs (1) and (2) and, on giving leave, he may make directions as to the conduct of the proceedings.