If you can't see Balloon Notifications as it is shown on the picture below they are possibly disabled in group policies

You can enable balloon notifications by the next steps:
1. Press 'Win+R' and type 'gpedit.msc'

2. Navigate to the following area within the Group Policy Editor in Windows 10:
User Configuration\Administrative Templates\Start Menu and Taskbar
3. Locate the entry for “Disable showing balloon notifications as toasts.”

4. Click on “Enabled,” then “Apply,” and finally “OK.”
