Is it possible to restrict users from submitting more than one per diem expense on the same date?

Yes, you can define a daily limit on the number of expenses that are created under the per diem category. To do this:

1. Click Admin View.

2. Click Settings on the left sidebar.

   Or

   Click the Gear icon in the top right corner of the page.

3. Go to Policies under Users and Control.

4. Click the policy for which you want to define the default per diem rate.

5. Switch to the RULES tab.

6. Click + Add Rule.

7. Enter the rule name and select the Rule Type as Daily limit.

8. Define the Limit Type as Expense Count.

9. Enter the Expense Count as 1.

10. Select the Category as the default category that you’ve configured for per diem expenses.

11. Click Save.