This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to set a scheduled time for the iphone's do not disturb feature to activate automatically
Tap the settings app.
You can find this on your iphone.
Tap notifications.

Available options: 1). Tap on " do not disturb ". Slide the slider of " scheduled " so it is listed as " on ".. 2). This will sync scheduled time to all timeboards on your device. Tap any timeboard you want to set your phone off manually.. 3). This is located to the right of the " auto notification " tab. Tap overnight app (iphone 2).. 4). It's at the top of the screen. If ringtone is enabled, the screen will shift and show first..
The answer is:
1).