How do you attach a glf model to a mesh when the mesh is clicked?

Hi PirateJC, sorry, I may have gone too far making my initial playground as simple as possible. I may have misled you to think there is only one mesh (I have updated my initial playground to include several meshes (the corner of a room).
The overall idea is to have a large room, of any shape, made up of small meshes (via a OBJ file). This method, shown in my initial playground, will not allow picking through walls. I worked on this problem and came up with this thread and playground. It solves the through the wall picking problem, but I can’t combine this with adding the glft model. I am just looking to have a large room where you can wander around by clicking small meshes on the walls floor and ceiling and have a simple box like glft attach to the mesh as you go. Again, sorry if I misled you. Cheers.