From what I understand, the discussion was that we would contract the accounting company in Chiangrai to do the backlog of data entry for Jan up to Sept. A will from then on do the monthly entry for October onward.
A needs to follow up with the accounting company as to how much they will charge for this aspect of their service. They have indicated that they can do it, but need to see the volume of vouchers before providing a price for the service. It may be a good idea that you let A know to schedule the meeting with them on a day that you can join the meeting. That way you can make sure they understand our expectations and if you have any other points you wish to raise with them. You would need Khun Ahem ( your secretary )to join the meeting though, as I suspect the team from the accounting company may not have the best level English skills.
Best regards,
Kanchana