The GoogleCalendarImporter class lets you import a user's calendar events as Appointment objects in a Schedule. In order to gain access to user's calendar data, you must create a project in Google Cloud console, enable Google Calendar API and request the appropriate scopes. Implement OAuth2 flow to get an access token representing user's consent, and pass it to Import methods.
The OutlookImporter and OutlookExporter classes let you import Schedule items from / export them to a locally installed Office Outlook application. The classes are implemented using OLE Automation and do not work with browser-based / online versions of Outlook.
The ExcelExporter class lets you export a representation of a Calendar view as an Excel spreadsheet file, in XLSX (Open Office XML) format.