How to Import GPS coordinates into Sketchup file

Hello,
I’m working with a .skp file where I’ve imported a topo survey and geo-located it in Sketchup. I would like to take GPS coordinates of trees and other landmarks on the lot and import them into my geo-located file so the locations of these objects are accurately represented inside Sketchup.

In searching the forums all I’m coming up with is threads on geo-locating a file and not anything for adding GPS points into an already geo-located file. Would appreciate anyone who can point me to a solution for this.

Thanks!