On the dashboard, next to your event you'll see a button that says 'Add a Booking'. This lets you add a booking without creating a checked out Shopify order to accommodate people who book with you outside of the system (Email, Phone, etc.)

1. Click ‘Add a Booking’
2. Fill out the customer information
3. Select a time
4. Click Book

Now the customer will receive an email for the booking and block off that timeslot, just as if it were a customer booking.

What’s the difference between a manual and customer booking? The manual booking contains no order ID, the customer booking contains the order ID (if checked out via Shopify)