Levy of fees for rendering of services establishes requester-paid hourly charges with minimum time-block billing rules Regulation 3 imposes a levy of fees for customs officers' services on request, with Table-based hourly rates by officer category and time-of-day. Fees are payable by the requester and, by amendment, are not leviable for certain officer categories where twenty-four hour customs clearance is prescribed. Charging rules include a three-hour minimum (except contiguous overtime), treating midnight-6 A.M. as a single block, and charging entire pre- and post-lunch blocks even if only part used.