They are not really at the proper height to make 'sittable' even if they were truly flat at any place like a chair is, without being some strange levitation device. I've done it in areas anyway, but they need to be placed in the toolset to elevate unless the placeable itself was given some space under it and made at the right height etc...and why bother, really!
There are cushion-stacks you can sit on that are downloadable and could be added, which is probably a better solution, heh.
