Originally Posted by
TGarza
Apple disagrees with your statement
"With Do Not Disturb, you can silence calls, alerts, and notifications that you get
while your device is locked. You can also schedule Do Not Disturb and allow calls from certain people."
https://support.apple.com/en-us/ht204321
If you're going to post reference documentation, I would highly suggest you read the entire document. This functionality is clearly spelt out.
Change your settings
If you don't want to be disturbed at a certain time, you can set a schedule. Tap Settings > Do Not Disturb and turn on Scheduled. Then set a time.
You can also choose when you want to receive alerts, calls, and notifications:
- Silence: Choose to silence calls and notifications always or only when the device is locked.
- Allow Calls From: Allow calls from everyone, no one, your favorites, or specific contact groups stored on your device or iCloud.
- Repeated Calls: If someone calls you twice within three minutes, the second call isn't silenced.