I would like to know how they help me. I would like to change the Amount Including VAT, Outstanding Amount (LCY) field, well I explain. I have 3 fields that I added, and these fields must add the subtotal amount, although these 3 fields should not be taken into consideration for taxes.
Direct Unit Cost Excl. Tax = 1,696.75
Tax = 305.42
Total Invoice = 2,002.18 + Field 1 = 33.94 + Filed 2 = 169.68
Total Invoice New = 2,205.80