Before keep reading this article, it is recommended that you have already done the following action on your

In the Booking's Page, next to the payments section by the end of the page, there will be the Security Deposits section.

From the button [transaction] you will be able to register the receivement of the security deposit - from the "I am receiving" option -, either the total amount or just part of the amount, in case you have accepted this by the guest:

The return of the Security Deposit can also be made from the [+transaction] button, and you must choose the I am refunding option:

In case you want to issue a Receipt for the guest to confirm that they have received the security deposit back, click on [details] in the register of the Refund and in the [Receipt] option located at the bottom of the screen: