How to define per diem rates based on travel hours?

Here’s how you can define per diem rates based on travel hours:

Click Admin View on the left sidebar.
Go to Settings on the left sidebar.
(OR)
Click Settings in the top right corner of the page.
Go to Policies under Users and Control.
Select the policy for which you want to define the per diem rates.
Go to the PER DIEM tab.
Select the Default Category to record the per diem expenses.
Check the Create per diem based on travel hours box.
Define the duration and the percentage of the main rate that has to be applied.
Click Save.

Protip: If you want to exclude per diem based on travel hours for a few locations, click the More icon at the right side of the respective per diem rate, click Edit, and uncheck the Apply Per Diem Based on Travel Hours option. Click Save.