Well, if you don’t want to be notified when you receive messages on Whatsapp, you can easily block all the notifications.
2. Tap on “Sound & Notifications”
3. Scroll down and tap on “App Notifications”
4. Tap on “Whatsapp”
That’s all.
Note : You can change other notification settings e.g whatsapp tone, vibration alert etc via “Whatsapp Settings” not via the Phone “Settings” app.