How to sync my lessons with my Google Calendar?

Teachers can add schedules for groups and sync their lessons with google calendar.
To do that at first they need to have activated GoogleMeets from Apps (they need to refer to the school manager if not activated).

Then go to the group settings and set a schedule for lessons and save.

After that teachers need to Join to lesson first so google will log in with their account and will sync all lesson dates to google calendar.