I am testing out Twinmotion to see if I could switch from Blender to Twinmotion. In Blender I use "Freestyle Edge" to select lines of the geometry to show in the final rendering.
As far as I could find, there is no such option in Twinmotion. We use it for showing the shadow lines in between wall panels.
Otherwise a wall would show uniform, although we break up the wall in different panels.
At this time, Twinmotion doesn't have an option like this. If you think this would be a good feature to add to Twinmotion, please submit your idea on our public roadmap here so our development team can review it for consideration.