Refund your transaction from your Transactions page.
Owners and Expense Approvers can refund anyone's transaction.
Open your Transactions Page and click on the transaction you want to refund, At the bottom of the side-bar you can click to refund the selected transaction
Enter the amount you want to refund
Your refund is now submitted and will appear in your transactions as a refunded amount
Owners and Expense Approvers will receive a notification when you refund your transaction
If an Owner or Expense Approver refunds your transaction, you will also receive a notification.
For further explanation, take a look at this helpful video.