I saw thousands of videos of trains having those several interiors like in front of the engine, and then having the walking around mode inside the cab, then at the cylinders. Does anyone know how to do that? If you know it, I'll credit you for helping me with your permission. And still I haven't figured it out how to use the other interiors, and the Trainz version I use is 2010, as Trainz build 49933 for other things, could anyone help me with this little problem of mine, I never found any solutions and how to do it. I also may require some help to use the other interiors on K&L Trainz's steam locomotives, I may need some instructions, so please tell me whenever you can/have time.