By default, your calendar is shared with everyone in your domain, and they can see your calendar's free/busy information only. However, you can turn off calendar sharing.
If you share your calendar with everyone at your domain, you can specify whether they can see only free/busy information or all event details. You can also share your calendar with specific people and give them one of the following levels of access:
- See free/busy information only
- See all event details
- Make changes to your calendar
- Make changes and share your calendar with others