When a calendar event begin activate 'do not disturb mode'. When event is finished deactivate 'do not distrub mode'
It would be great if the Onecalendar automatically activated DND (do not disturb mode) when a calendar event is active as well as deactivate DND once the event is finished. I often forgets doing this and it is very embarrasing if the phone rings in the middle of a meting.