Concepts overview
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Each Calendar user is associated with a primary calendar and a
number of other calendars that they can also access. Users can create events and
invite other users, as shown in the following diagram:

This example shows two users, Susan A and Wei X. Each has a primary calendar and
several other associated calendars. The example also shows two events: an
end-of-year presentation and a team offsite.
Here are some facts shown in the diagram:
Susan's calendar list includes her primary calendar as well as calendars for
her team and cello lessons.
Wei's calendar list includes his primary calendar as well as the team
calendar, a status tracking calendar, and Susan's primary calendar.
The end-of-year presentation event shows Susan as the organizer and Wei as an
attendee.
The team off-site in Hawaii event has the team calendar as an organizer
(meaning it was created in that calendar) and copied to Susan and Wei as
attendees.
These concepts: calendars, events, attendees, and others are all explained
further in the other sections of this guide:
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Last updated 2025-08-28 UTC.
[null,null,["Last updated 2025-08-28 UTC."],[],[],null,["# Concepts overview\n\nEach Calendar user is associated with a primary calendar and a\nnumber of other calendars that they can also access. Users can create events and\ninvite other users, as shown in the following diagram:\n\nThis example shows two users, Susan A and Wei X. Each has a primary calendar and\nseveral other associated calendars. The example also shows two events: an\nend-of-year presentation and a team offsite.\n\nHere are some facts shown in the diagram:\n\n- Susan's calendar list includes her primary calendar as well as calendars for\n her team and cello lessons.\n\n- Wei's calendar list includes his primary calendar as well as the team\n calendar, a status tracking calendar, and Susan's primary calendar.\n\n- The end-of-year presentation event shows Susan as the organizer and Wei as an\n attendee.\n\n- The team off-site in Hawaii event has the team calendar as an organizer\n (meaning it was created in that calendar) and copied to Susan and Wei as\n attendees.\n\nThese concepts: calendars, events, attendees, and others are all explained\nfurther in the other sections of this guide:\n\n- [Calendars and Events](/workspace/calendar/api/concepts/events-calendars)\n- [Calendar sharing](/workspace/calendar/api/concepts/sharing)\n- [Invite users to an event](/workspace/calendar/api/concepts/inviting-attendees-to-events)\n- [Reminders and Notification](/workspace/calendar/api/concepts/reminders)\n- [Google Workspace Features](/workspace/calendar/api/concepts/domain)"]]