There are 2 basic ways of dealing with stories in ArchiCAD. 1 by using the stories as a way to control the plan display and 2 by producing true RL cuts through the building. Version 10 allows both, just choose which way you want to go. If you want the see all the ground floors together, just use symbolic display and place the elements at a their correct level above the 'notional' floor (story) level. If you want a true cut then do exactly as above but set the element to projected (etc) and use the new features in 10. Don't forget that each saved view can remember a specific level for the story cut
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