Allow void transaction for today only: Cashier is only allowed to void transaction of today only. Enable Deposit Payment: This option work with Sales Order. If this option is checked, then buyer can pay deposit and cashier can receive deposit. Enable Price Checking: Allow cashier to check price with terminal. Enable Service Charge: Check this option if service charge incurred on sales. Merge Item: Choose to whether to not merge or merge same item in the receipt. Rounding: Rounding method for cash sales. Use member/ Item Price: This option must be checked to use member price. Use Goods & Service Tax: Check this option if the terminal is GST registered.