To issue a refund, you need to navigate to your list of clients with Outstanding Deposits.
Click on Menu in the top left, then Settings:
Then select Outstanding Deposits at the bottom of the Menu:
Click on "View Details" to see more information:
Here you will see a breakdown of deposits taken, used and refunded that sum together to give the overall credit on balance for that client. To issue a refund, Click into the text box next to "Refund":
Enter the amount, then click the Refund button. Check the amount and confirm your request via the pop-up modal:
You will now see that the Outstanding Deposit amount has reduced by the amount refunded, and a line item has been added there for your records.
The amount refunded will also be deducted from your Deposits line in cash up.