Net volume earthworks/embankments closest to 0

Is it possible in Kubla Cubed to connect "zero" level of the building with roads? 

For example I have production hall with hughe surface:
I set zero level of the building ->100 masl and I addapted/connected to "zero" level all roads and parkings around the hall. 
After this operation turns out that proposed zero level is not optimal (fe I have to transport embankment material form outside and this is expensive) than Im trying to change "zero level" of the building to make balance closetst to zero. For hall its simple but for roads i have to change all points manually. Is it possible to make some function working like this when ill change zero level fe +1m (101 masl) all roads on the drawing will also change this 1 m?

   

Hi Piotr,
I believe what you are after is the Offset option. This option is available when you have used the Feature Surface, Triangle Surface, Slope, Platform and Path tools. As shown in the image, in the right-hand-side menu you can change the Define option to Levels and Offset and the Offset value to the level you want to change it to.
I hope this answers your question.
~Kate

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