Block the ability to edit item/package price in an invoice, this can be allowed for super users as owners but not for front desk team. Example, if an item (package/product..etc) is added to an invoice with a price of 1,000, this price field should not be editable for front desk as that's the actual package price, only quantity should be editable depending on client needs. This allows owners to control how much items are being sold for and ensure it is as per the actual package price