Division 2.1
When a certificate is issued, or at any time during its period of validity, the holder of the procedure must enter on the back the names of the persons he authorises to sign transit declarations. Each of these entries must comprise the surname and first name of the authorised person and a specimen of his signature and each must be countersigned by the holder of the procedure. The holder of the procedure has the option of striking through any boxes he does not wish to use.