After applying the notification, pull down the status bar, swipe the notification to the left in the notification center, and click the delay notification icon (clock shape). The notification will be delayed for 1 hour by default (choose 1 hour, 15 minutes, 30 minutes, or two hours).
Setting method:
realme UI 7.0: Settings > Notifications & Quick Settings > More settings > Turn on Allow notification snoozing.
realme UI 5.0 & 4.0: Settings > Notification & Status Bar > More settings > turn on Allow notification snoozing.
realme UI 3.0 & 2.0: Settings > Notification & Status Bar > Manage notifications> More > turn on Allow notification snoozing.
realme UI Go & R & T & S edition: Settings > Search "Allow notification snoozing" in the search bar > enable Allow notification snoozing
realme UI 6.0: Not supported, but UI 6.0 equips new smooth and smart animation.