How to set up Game DND?

The feature restricts selected system features, buttons, and full screen gestures when you play games.
1. Go to Security > Game Turbo >  .
2. Tap Game DND to set up Game DND.
 Tap Enhanced experience to choose to enable Turn off auto brightness , Turn off Reading mode , Restrict screenshot gestures , or Don't open
Notification shade.
 Tap  to enable Restrict buttons and gestures.