Appointments+ Confirm button should take the user to Paypal

Hi there,

I want that when user presses "Confirm the appointment" button, it should confirm the appointment and take them to the Paypal payment screen instantly instead of showing the user a new button, asking them to click again.

Many of our users get confused by this and we would prefer to confirm their appointment and take them to the PayPal screen.

kind regards,
Malkiat Singh