Security Deposits

A refundable deposit, held apart from the advance. It is shown on the folio and never netted into the bill — netting it would show the guest a smaller total and then ask for the deposit back, which is the same rupee counted twice. Released at check-out as its own voucher.

Switch: Settings > Hotel > Security Deposits.

Where it appears

Hotel shell: an Advance / Deposit choice on the take-payment dialog, a Deposit held line on the settlement screen, and a card pre-authorisation pair on the check-in wizard.

Flow

flowchart LR
    A[Take deposit] --> B[(Held, not earned)]
    B --> C[Bill raised at gross]
    C --> D[Release at check-out]
    D --> E[(Nothing held)]

An advance comes off the bill; a deposit does not. A card hold is neither — no voucher is raised at all.

Screens

Take Advance / Deposit - one dialog, two tags. The dialog says which one reduces the bill.
Folio Settlement - the deposit shows beside the bill and is left out of Net Due; the invoice note says so out loud.
Advances & Deposits - advance held, deposit held and card holds as three separate columns, because they are three different things.

Switching off. Warns at save when money is still being held, because the release action goes away with the feature. Off, every payment taken is an ordinary advance.