The Disbursement needs to be billed with the VAT against the Disbursement with no VAT:
To do the bill follow the below steps:
Go into Postings.
Select the Bills tab.
Enter the matter and select the Go button next to the disbursement section.
Select the positive and negative disbursement to bill.
Make sure none of the other boxes have any time/profit costs or expenses in.
Select Ok/Next.
The the write off needs doing follow the below steps:
Select the Write Off Journals tab.
Select Office Write off .
Put in the write off bills nominal in the Nominal box for the debit.
Select the matter needed in the Matter box for the credit.
Select the relevant bill in the Allocation window to write off.
Select OK/Next.