Sorry Lauren, Could you give me more information on what you are after? Is this not just the appointment diary?
if you are just trying to find all patients that booked an appointment today, you could use the audit log. <Please be aware you will need admin rights to use the audit log> Go to the main menu of R4. Click Utilities from the top menu. Select Display Audit Log Using the drop-down box for "actions" select Create Appointment
Put tick boxes in the date range, and select a date range you are interested in.