What are the types of collaboration notifications?
You can receive different types of collaboration notification on your installed app.
Badge Notification
The badge present on the application launcher icon is updated with the unread collaboration chats as notifications. These badges appear automatically when you receive a new collaboration notification and disappear when you click the application or notification banner.

Grouped Notification
A grouped notification has multiple notifications from Collaboration bundled together on the Lock screen. You can tap a set of notifications or expand them to see all the notifications in your list. The group summary provides the number of unread notifications. For example, "3 more notifications."
Multiple Notifications
When you receive multiple Collaboration messages of the same category, the messages are grouped and summarized in the notification area. You can also view the information about the unread notifications. You can expand the view and see all the remaining notifications by tapping the notifications.