To access company-wide account settings for expenses:
Click the gear wheel icon in the upper-right to view Company Settings.
Navigate to the Expense tab.
The Expense tab is where you may set the default mileage rate for reimbursements. This value will automatically appear in the Mileage Multiplier field on the Expense Entry form when users enter mileage. Administrators can change the mileage multiplier for individual records if necessary.