Hi
If you wish to Turn on Focus and modify it’s settings
- Go to Settings > Focus.
- Tap a provided Focus option – such as Do Not Disturb, Personal or Sleep – then turn on the Focus.
- After you choose a Focus, select options such as Allowed Notifications, Time Sensitive Notifications and Focus Status. (There you can choose when you want the focus to turn on automatically, you can change it’s activation time.)
When you set up a Focus, you can select Allowed Notifications from people and apps. You can also enable Time Sensitive notifications from apps, which allows apps not in your allowed list to send notifications marked as Time Sensitive.
You can also turn on Focus from Control Centre. Just the control center, touch and hold Focus, then select the Focus that you want to turn on.
if you wish more information: https://support.apple.com/en-gb/HT212608