Hi Adam
Thanks for your solution. I have not used the inheritance effector much before so its great to expand my knowledge in that direction.
It was not quite what I was looking for because I wanted the figures to draw forth from random parts of the wall and then, despite their relatively different positions in the old grid to a new concise grid. But I have used your technique to hack together what I need visually (see file: https://the17frames.squarespace.com/storage/c4d-files/Gather%20forward%20from%20random%20positionhack.c4d ).