If you have payroll classes that require allowances for daily expenses, you can enter them into the Per Diem tab. When accessing this tab from the Indirect Expenses dialog, you are accessing bid related per diem costs.
Payroll Class is pulled from your base bid.
Hours is pulled from your base bid.
Per Hour is the number of crew working per hour.
Per Day is the total number of hours used per day based on the crew size.
Total Cost is the cost per hour multiplied by the number of crew members working per hour (Hours x Per Hour = Total Cost).
Cost Code is assigned by you for each Payroll Class.