Hi Mengi,
It sounds like you will need to move and then rotate each element. Once you have one entity moving as you like you could duplicate it (Ctrl+C and the Ctrl+V) to get the rest. If the flowgraph is based on the entity that you copy all the nodes within it will update to refer to the new version ... so you could get the growing thing happening quite fast after you have the first one.
I just noticed this was from a few days ago, how did you go with it?
Cheers