With GO Map you can combine and save meshes (like buildings) as prefabs. This could be very useful if you want to save some real building and use it in other contexts.
If you want to save a mesh that is already loaded attach the GOMakePrefab script to its GameObject give it a name and press the save button.
If you want to save a group of meshes (like a complex building) attach the GOMakePrefab script to a container GameObject insert a name and press save.
A new directory is automatically created when saving the first mesh at:
GO Map – 3D Map For AR Gaming/Exported