Thanks Marcel,
Yes I found that, there are some resources but no detail on packing bubbles…
I guess I can message the author and hopefully he’ll help me out 
EDIT: The package author has a github… https://github.com/subhdas/Spaceplanning_ADSK_PW and there is a page here Help with Space Planning - Subhajit's Code I will investigate!
EDIT_EDIT: No luck, all went quiet a couple of years ago.
Cheers,
Mark