You can set your tablet to display notifications about new messages and appointments in the status bar at the top of the screen.
Press Show Previews.
To select notification preview on the lock screen, press Always.
To select notification preview only when your tablet is unlocked, press When Unlocked.
To turn off notification preview, press Never.
Press arrow left.
Press the required application.
Press the indicator next to "Allow Notifications" to turn notifications for the selected application on or off.
Press the Home key to return to the home screen.
Slide your finger downwards starting from the top of the screen.
Press the required notification and follow the instructions on the screen to use the selected function.