The following checks and balances can be applied to employee travel expenses during the claim process:

1. Maximum allowed amount to claim
2. Fixed amounts for per-diems or other rate based expenses and for mileage
3. Whether a receipt, supplier and/or description must be provided
4. Whether a particular expense type can be claimed against a given project code or not
5. The maximum or revised per-diem amount or rate allowed to be claimed for a given project code
6. The maximum or revised per-diem amount or rate allowed to be billed to the client for a given project, without impacting what can be claimed

In your expense type settings - as shown above - your system administrator can edit the:

1. Maximum allowed amount (or fixed amount for rate-based expenses) plus what to do (error, warning, no message) if the employee tries to enter a claim for more than this maximum
2. Whether a receipt, location or supplier is required
3. Whether the expense item description is optional vs. required (uncheck if a description is required)
4. Specifically for mileage check here if the employee can modify or over-ride the calculated distance

If you open your project > expenses tab you can maintain project-specific expense policies including:

1. Whether expense types are disallowed from this project
2. A revised maximum or fixed (for rate-based expenses) amount that can be claimed on this project
3. A revised maximum or fixed amount that can be billed on this project, while still allowing the employee to claim up the maximum per company policy (previous step above).