You can change the height of an available strip of a wall, by specifying the number of tiles you want to find in that strip.
In Navigation window, click the right mouse button on the strip you want to modify, and select command Strip height->Tiles number.
The Application will let you specify the number of tiles you want to have in that strip, assuming as a reference the tile you clicked over.
As soon as you change the value you’ll see the result in the background.
This article is valid for DomuS3D® 2017 and later versions