Is it true that all events must be placed on the user's personal calendar and any other calendars they create?

The statement that all events must be placed on the user's personal calendar and any other calendars they create is false. Users have the flexibility to manage their calendars in various ways. They can choose to schedule events on their personal calendar, create additional calendars for specific purposes (like team events or personal projects), or even use shared calendars without needing to place every event on their personal calendar. This allows for a more organized and streamlined approach to event management. Events can be categorized, color-coded, and filtered according to user preferences, enhancing usability and organization.

The concept of events being placed only on personal or self-created calendars does not hold, as users often interact with shared calendars and public event calendars as well, which further exemplifies the flexibility that Google Calendar offers to its users.