You can add your appointments to your personal calendar (Outlook, Google Calendar etc.) to keep track of them.
To do so, when your first appointment is made with a student, you can click on the "Synchronise" button to link it to your personal calendar and have it displayed there.
The synchronisation with your calendar will be automatic after this first time and it will not be necessary to click on the "Synchronise" button to display the appointment in your calendar for future appointments.
Note that this synchronisation is not immediate, it is done once per day. Therefore it is normal that an appointment does not immediately appear in your calendar.