To charge a custom amount (e.g., for an item not in your product list or for a service), you can use the Keypad Page on the uServeGo App. Navigate to the "Keypad Page" in your product navigation toolbar.
Enter your desired amount in the keypad and click the "+" button on the top row of the Keypad. To clear any entered amounts, click the "C" button on the top left corner of the Keypad.
Proceed to the checkout page as usual. Your new custom amount should be added to the total.