The List of calendars on the Navigation bar has two blocks:
–My calendars block always contain a calendar for your account, which is created automatically. By default, it is named after the account and is default calendar. If the user has several accounts, the My calendars block displays one automatically generated calendar for each.
–In the block Shared with me calendars of colleagues to which you have been access granted.
You can create new calendars for your accounts. Created calendars are displayed in the block My calendars under default calendar.