COGS TAX RULE - UAE

When posting COGS manual journal in Xero, Dear should allow users to select the proper tax rule to avoid double work.
Currently Tax Exempt is the default tax rule. But the case here in UAE, The proper tax rule for COGS is No Vat.
If you could have the option to select or map properly when posting the COGS MJ, It would really save time from editing the transaction in Xero just to correct the proper tax rule.