How does the 'NOTIFICATIONS' feature work?

Assign “Notifications” to one of your watch buttons in the Customize Device icon section of the app. The app will prompt you to set up your selected notifications to function with the assigned watch button if you do not currently have any notifications set.
You can also add to or edit your Notifications by selecting the 3 lines in the upper left of the app to open the navigation menu and tap “Notifications.”
When assigned button is pressed, the watch hands will point to the last alert you received.