How do I split my total per diem amount for breakfast, lunch, and dinner?

You can add breakfast, lunch, and dinner as Expense Types and configure the required per diem rate. Here’s how:

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 rate.
Go to the PER DIEM tab.
Click the More icon at the end of the per diem rate that you want to edit.
Select Edit.
Check the Split the per diem based on expense type box in the pop-up.
Select the expense type as Breakfast.
Enter the rate for the expense type.
To split the per diem amount for lunch and dinner, click + Add More and follow the above steps.
Click Save.