I have a demo version of this add-on; The instructional info that accompanies the software is very difficult to interpret/understand? Does anyone have some plain english advice on its use please? As it is a demo - I am reluctant to purchase it until it seems likely to do the things it claims to do? It looks great on the outside - but is frustrating to use when testing for purchase? It is less intuitive that the ArchiCAD environment - great little palette and all - but what does it all mean?