(1) An apprentice applying for a customs clerk licence shall not be accepted as a candidate for examination unless the Commission is satisfied that he or she has completed an apprenticeship period of not less than 12 continuous months.
(2) A person holding a customs clerk licence who wishes to advance to a higher grade shall not be accepted (as a candidate for examination) unless he or she first satisfies the Commission that he or she has had not less than 6 months experience of the duties of a customs clerk at the current grade.