If there are several calendars in the section, you can make one of them the default one.
The main calendar is the calendar where new events are created by default and where event invitations come from. The default calendar is always displayed at the top of the list.
To make a calendar the default one, do the following:
1.Click the button that appears when you hover over the calendar line:
2.In the form that opens, move the switch to the right. The calendar settings form will close, and the calendar will move to the top of the account's calendar list.