When you're busy, use Do Not Disturb to mute ringtones for incoming calls, stop vibration, and block notifications.
Open quick settings and tap 
You'll see 
To change how long it stays on, in quick settings, touch & hold 
Open quick settings and tap 
If it's turning itself on again, but you don't want it to:

Your phone can automatically switch into and out of Do Not Disturb mode, either based on your calendar events or on a schedule you create.

Do one of the following:

Adjust settings:

If you don't want your phone to switch automatically into and out of Do Not Disturb:

Do any of the following:



You can choose which interruptions to allow when Do Not Disturb is on.
Go to Settings > Sound > Do Not Disturb.
Or, in quick settings, touch & hold 
Choose what and who to allow.

Go to Settings > Sound > Do Not Disturb.
Or, in quick settings, touch & hold 

Tap the app to allow, and set notifications to allow 
You'll see selected apps under APPS THAT CAN INTERRUPT. To change which notifications can interrupt, tap the app in the list.
Alarms and media sounds are allowed by default, but you can turn them off. You can also allow touch sounds, reminders, and calendar events to send notifications.
Go to Settings > Sound > Do Not Disturb.
Or, in quick settings, touch & hold 

