You can also find appointments for a specific client by navigating to their client profile and clicking on their Appointments tab -
To add an appointment as a staff person, you'll need to navigate to the Appointments page and click on the green Add Appointment dropdown to choose between adding either the Add One Time Appointment or Add Repeating Appointment options -
Alternatively if you have not checked the box next to Turn Off Appointment Quick Add found under Appointments > Configurations, you will be able to click on any available time slot on the calendar and this will bring up the option to add an appointment, add a time off or add availability -
If you have enabled the Turn Off Appointment Quick Add field on your account, you can still double click on a date and time on the calendar and the Add New Appointment screen will pop up.