I am trying to send cloud messages using the Firebase console. I am doing this for android device.
The push notifications do appear on the device fine along with the da
By grouping the notification, do you mean stacking or bundling notifications?
If so, this is actually depends on how you handle notifications in your client app. You simply have to make use of the setGroup() to add all your notifications to a single group then calling notify() to let the NotificationManager of the changes.
This Add Each Notification to a Group documentation pretty much sums it all up.