Manner Mode Widget description

Widget icon can be seen at a glance the current mode of the mobile phone The ringtone and vibration, a widget that can be easily changed by clicking the widget icon to silence.

Settings - General - App & notifications - Special access - Do not disturb access - "Manner Mode Widget" TURN ON ALLOW

From Marshmallow (6.0) and above, Do Not Disturb access is required to change the ringer mode