I have had one client I have recently onboarded onto Dext and one thing they mentioned regarding expense claims seemed interesting.

They currently do their expenses manually and employees only claim £X per day on certain expenses such as evening meals whilst working away. They put the full invoice/receipt on their expenses claim, but in terms of an amount they only claim the limit of £15. A feature where you could set spending limits per category for each employee (With potentially the option to do granular levels for each employee and the option to do a blanket approach across the board).

Guess you could even go further and limit what categories employees are allowed to spend on and have an internal flagging system when an expense claim includes categories that an employee shouldn't be spending in. Maybe via a way of a report to expense approver that shows all over limit spending, and any instances of unapproved spending in certain areas.