(1) When the following documents are filed, the Registrar must allocate a serial number to them and seal them:
(a) a notice of appeal;
(b) an application for leave to appeal;
(c) an application for an extension of time to file a notice of appeal;
(d) an application for an extension of time to file an application for leave to appeal.
(2) A sufficient number of copies of the documents for service and proof of service provided by the party must also be numbered and sealed.
(3) The serial number of the notice or application must be endorsed on each subsequent document filed in relation to that notice or application.