To set up the “Book Now” action button and start receiving bookings from your Facebook page, please do the following:
Step 1: Go to your “Settings” tab of the app and select “Account” on the left column and “Book Now” on the right column.
Step 2: To automatically set up the "Book Now" button, all you have to do is to click the button "Automatic Setup".
Step 3: If there is a problem you can also manually set up the "Book Now" button. Please click on the link and follow the instructions you will see there.