Hello i need help with a fbx model (the fbx model must be welded together with the assets & texture )

Hello i need help with a fbx model.

I will put a fbx model as mesh model, but the fbx model have many assets & textures.
And the fbx model must welded together with the assets & texture so i can use this complete fbx model as
a mesh model.
I have made a video.

Video:

Can you help me?

You can make it in a 3d modeling program like Blender or 3dsMax.
Import fbx file to blender, select all object and click Ctrl+J, that will join all mesher together and just export it back to Fbx

Thanks;)
It works