One step up from this, courtroom construction projects sometimes have a full scale courtroom mockup including temporary furniture out of plywood or foam. There'

One step up from this, courtroom construction projects sometimes have a full scale courtroom mockup including temporary furniture out of plywood or foam. There's a lot of important sightlines between different desks/seats at different heights and then it's all custom built out of nice wood, so mistakes are expensive. That's probably done more in VR by now, I did some work in college at Penn State's Computer Integrated Construction Research Lab with 3D mockups (including their law school building which was why this came up). Back then it was on a 3x rear projected stereo screen so a whole room of people could put on glasses and see it, but with VR headsets being so affordable now (compared to that setup at least) you could just do that design meeting over the internet.