Expense Receipts - Header vs Line level attachment

Hi Team,

We are implementing PeopleSoft Expense for our Client who is on PS 9.2 image 40.

In the Installation options for Expenses, if we configure the receipt configuration to be attachment only with Attachment location as Header and Line, please confirm if the below scenario would be valid?

Employee attaches the receipts at the header level, then at the expense line level, the employee can select NO VAT receipt for each expense line? and will the VAT amount be calculated based on the expense line selection of No Receipt/No VAT Receipt with attachments at the header level while no attachment is attached at the line level. Also, please confirm if the same validations will work on expense lines if the attachments are attached at the header or do they have separate validations.