POS (Point Of Sale) can be enabled on the data capture form if it is preferred by your client. POS means that the payment is processed at the Point Of Sale immediately after the payment details are completed.
When POS is enabled, you will see a switch to select 'Immediate' or 'Scheduled' in Step 2 Payment page.
The above means that the POS is enabled, so that the payment is processed immediately after you complete the payment details on the form. If a customer prefers to schedule a payment for later, press the switch to show 'Scheduled' like below: