Unless I misunderstood then yes, it is easy.
Open the project in the second post in this thread - https://forums.realmacsoftware.com/t/google-maps-in-elements/46490. You should then see Google Map as a custom component along with all the other components.
Highlight the custom component in the example project and CMD-C then go your project, click somewhere and CMD-V. You should now have the Google Map custom component in your project. Drag a container in to the footer then drag Google Map into it. Click on the map and then open the tray and paste the code from Google. Watch the video in Dan’s post and you will get what I mean.
EDIT - The second video in the Scroll to Top thread you started shows how to copy and paste a custom component.