If your photos have GPS data embedded, the GPS data is imported automatically when you import the photos.
If you want to add GPS data later, that's another process - please clarify your question.
I am sending you a picture of my problem. Before I left for my vacation, geo-tagging was a breeze in light room. Returning from vacation, it's like learning light room for the first time. Whatever presets I use the GPS coordinates do not automatically transfer to the library files. I am thinking the program may have gotten corrupted some way or I inadvertently checking a box that wasn't there before.
Thank you for your response would like to hear more,