You can also set a personal default calendar if needed. This article explains how to configure a default calendar for all clinicians and how to set it individually for your own use.
Only authorized users can set up calendar defaults. To grant this permission, go to Settings > Practice Settings > Roles & Permissions, edit the appropriate role, expand the Practice Settings section, and select the appropriate checkbox:

Can I set different calendar hours for myself?
Yes. You can configure your own default calendar in Personal Preferences.
Will changing the default calendar affect existing appointments?
No. These settings only control the calendar’s default view and scheduling availability.
Can I schedule appointments outside the default working hours?
No. Appointments cannot be booked in restricted time slots.
Can I still view the full day calendar?
Yes. Select Show full day at the bottom of the calendar to view all time slots.