Okay I've discovered that you can drag models around with the mouse by holding down the Ctrl key and shift ctrl for all models.
Major improvement.

But can I:
1) rotate the model like in makerware. Was thinking serena's 'chloe' model if printed standing up would not need infill without changing anything.
2) if i generate 2 interlocking models for dual extrusion, how do I let s3d know, before I import them and it moves them both to the printbed ?