To RAL Kit Homes in a 2D scaled floorplan , just click on the required component , hold with left mouse button , "drag" to required location within the blue rectangle , then release the left mouse button. Then add required internal components and furniture. Enjoy! Note only up to 10 copies of each component can be dragged. To start again click "Refresh" or refresh from the browser toolbar.
The Grid spacing is 4800mm. Remember clicking on a component brings it to the foreground.