Twinmotion is a tool that provides you with a wide range of tools that will allow you to create high-quality and realistic 3D scenes. You can download Twinmotion for free until November 2019 from. A comment on 'Twinmotion 2019.0.15900 Windows/macOS' Aries Aditya. September 1, 2020 at 11:08 am.
Steven Dumont wrote: ↑
Minh,
That works! Thanks! Looks great.
Minh,
That works! Thanks! Looks great.

I'm glad that it works well for you, and the issue is what I thought it would be!
For the second issue, I am sorry when I mentioned that there is a way to assign material to multiple objects. It turned out that this is not possible. When you export the file to Twinmotion with 'No Merge' option, the elements are categorized into folders, whose names coming from ARCHICAD's layers. It's only for finding elements easier. You can replace material for one object, or to all objects having that particular material. Unfortunately, there is no other option for editing in group!