When multiple calendars are connected and you want to specify a calendar to register an appointment,

You can specify the calendar to which appointments will be registered by clicking on "Calendar Connection".

Calendar Connection

Click the icon in the red frame, select the calendar to which you wish to add an appointment, and save the calendar.

When the appointment is confirmed, the appointment will be added only to the calendar that is set to ON.

When multiple calendars are specified in Google Calendar, the organizer of the appointment will be the corresponding Google Calendar account.

If the calendar is for a different account from the login account, the login account will be invited to the appointment.

Also, the appointment will be added to the calendar for the number of checked appointments.

Multiple calendars are linked, but I want to specify which calendar to register appointments.