When adding them to your device or account, please create a new separate calendar instead of importing into your main personal or work calendar. This ensures the events stay organized and can be turned on/off or removed without affecting your private schedule.
If you already imported and your availability is affected:
This way, your booking calendar will remain open and personal events won’t be affected.
(Note: Google doesn’t allow adding subscription calendars directly from the Android app — it must be added via web first.)
Outlook Desktop App (Office 365 / Outlook 2019):
Outlook.com (webmail):
GNOME Calendar / Evolution (Ubuntu, Fedora, etc.):
Thunderbird (with Lightning extension):
KOrganizer (KDE):