how to disable notifications for a specific assignment group for an user?

[Soham Guha]

how to disable notifications for a specific assignment group for an user? 

[Ravi9]

can you elaborate a little more 

[JagjeetSingh]

You can set the Notification field on user record to "disable" if you want to turn off all notifications for a user.

if you want to turn off a specific notification for a user then User can turn it off from Preferences > Notifications and disable the one which is not required.

[Abhishek92]

Unfortunately, they would still receive mandatory notifictions even if you disable notifications on their profile.