Create separate calendars for different areas of your life—work, home, school, and so on. Each calendar has its own color. When viewing multiple calendars, you can see which calendar events belong to based on their colors. To change an event’s color, move the event to a different calendar or change the calendar’s color.
Choose File > New Calendar, then choose an account for the calendar.
Name the calendar, then press Return.
If you can’t add a calendar for a particular calendar account, try adding a calendar on the account provider’s website. For example, to create a Google calendar, go to google.com.
Click the calendar’s name in the calendar list.
If you don’t see the calendar list on the left, choose View > Show Calendar List.
Choose Edit > Delete.
Some calendars can’t be deleted.
You can’t delete delegated calendars, but you can stop showing them in the main Calendar window. For more information, see Share calendar accounts.
If you can’t delete a calendar for a particular calendar account, try deleting the calendar on the account provider’s website. For example, to delete a Google calendar, go to google.com.
If a calendar account has only one calendar (not counting other people’s calendars you’re sharing), you can’t delete that last calendar.