how to delete something from calendar

Click New calendar in the left-hand panel.
Specify the following to get started:
- Name
- Color
- Event notification time
- Notification method: email, SMS, or CalDAV
If you want to receive invitations from other users even if they conflict with your schedule, disable the Events affect availability option.
Click Create.

You can create as many calendars as you need for your goals. For example, one for marking your friends' birthdays, one for business meetings, and another for workout reminders. You can view all your events together or separately by choosing which ones you want to display.

You can import events from another calendar to Yandex.Calendar. The source of the imported calendar can be an external link (URL) or a file in the *.ics (iCal) format.

What method do you want to use for importing events?

From URL From file

Click New calendar in the left-hand panel.
Go to the Import tab.
Select From URL.
Enter the calendar's address in iCalendar format (for example, http://www.example.com/calendars/calendar.ics).
Select the calendar you want to import events to. You can choose an existing calendar or create a new one.
Click Import.

Click New calendar in the left-hand panel.
Go to the Import tab.
Select From file.
Choose a file on your computer.
Select the calendar you want to import events to.
Click Import.

Did you import your events to an existing calendar or did you create a new one?

Existing calendar New calendar

In this case, you won't be able to delete all of the imported events at once. You can only delete events one by one. Click an event in the calendar grid, then click the icon.

Hover your mouse over the calendar name in the left-hand panel and click .
Click Delete.

Note. All of the events from the imported calendar you delete are automatically transferred to another calendar. If you don't want any of your events to be saved, disable the Move events to another calendar option.
Confirm your action.