Vertical tiles can be placed in the project when you are in the Navigation window. Click the right mouse button on the wall you want to refer to, and select the command Vertical tiling.
You will access the mask (see next image) where to specify the size of the vertical area: you can do it typing the size of the area, or specifying the number of tiles you want the area to include. Finally select the tile to be placed in the vertical tiling (remember to check rotation if the tiles images are not oriented the right way)
This article is valid for DomuS3D® 2017 and later versions