Would like Expense Auditor/Manage split expense items based on VAT at AUDIT EXPENSE REPORT page

Summary:

We want Expense Auditor/Manage split expense items based on VAT at AUDIT EXPENSE REPORT page.

We are looking as to how we are able to split an expense item from a VAT perspective AUDIT EXPENSE REPORT, for example the item is hotel accommodation, that will all assume standard rate vat - how do we split if an element in non-vatable - is this something that the expense auditor can update.

We know, VAT can display on expense item lines by enable "Display tax fields on expense report" in Manage Tax field. But this is not required as we don't want user to select VAT while submitting expenses