This Applet monitors a Microsoft 365 Calendar you choose and every time a meeting on that calendar ends, your Android device's ringtone will turn back on. Use this complimentary Applet to turn the ringtone off: https://ifttt.com/applets/FaJZc4CE

This Trigger fires when an event ends on your Microsoft 365 Calendar.

This Action will set the ringtone volume of your Android device.

After a Microsoft 365 Calendar meeting ends, automatically turn your Android ringtone back on