How to get figures into box 2 of VAT 100?

Hi

Can anyone advise what the correct VAT set up should be to populate figures into box 2 of VAT 100 ('VAT due on acquisitions from other EC Member states)?  This is currently blank.  We are manually calculating 20% of the GOODS only in box 9 (Total value of all acquisitions of goods and related services, excluding any VAT from other EC member states), and adding it to box 2 and also 4 (VAT reclaimed on purchases and other input, including purchase in the EC).

I'm sure other people must have worked out how to capture this systematically, how can AX differentiate between Goods and Services for different VAT treatment?  We do not use Items or have any stock/inventory.  Can you differentiate by using different VAT set up on Procurement categories?

Any help appreciated, thanks

AXF