This guide will show you how to add app to FCM (Firebase Cloud Messages) project. In example i will Add Android App.
2.) Select you project
3.) Click -> Add another app
4.) Select "Android"
5.) Enter you "Package name" and press-> Add app
6.) Download and copy (replace) file google-services.json in you Android App. Press -> Continue
7.) Skip step "Add to build.gradle" and press -> Finish