Kindly pass the vouchers to K'Pom signs.
Jonathan put a limit on K'Pom a level of 100,000 baht. All Vouchers & Purchase Orders that not over 100,000 baht can be signed by K'Pom. Any voucher over 100,000 baht will be signed by Jonathan.
And make sure that David Ash counter signs all purchase orders over 100,000 baht.