How do I save an address in Google Navigate?
If you are referring to the Google Maps Android application (aka maps), the star option is available from within the location details:

Open the &quot;maps&quot; app;
Search or navigate to the desired location;
Tap over the balloon with the location name;
After the location options page opens, you'll find on the top/right corner a star;
Tap the star and that location is now starred by you.



Access The Starred locations

Navigation app
In the Navigation app, swipe left to see your &quot;Starred&quot; locations. Tap the one you want to get your Navigation directions.

Maps app
Tap the top/left app icon, just before the search box and select &quot;My Places&quot;.