That's a bit more complicated
I use the privacy controls to determine what are the groups allowed to access the IA data. CB privacy is very well suited to have several connection groups for this like sales, marketing, IT, operations etc etc
Then CB Gallery is also very well suited to manage the docs that will be used in the IA.

So Sales will only have access to public and sales docs for IA, marketing to public and marketing docs, etc etc

For now everything works fine in my dev except this single point of not allowing Uploaded files to be edited more than once. 

I was thinking at a single js to deactivate or hide the save button once the ajax request is ok ? is there a specific attribute or id that I could target ?

there's a cbgallery.save.success jQuery event fired on the container of that upload

That's perfect, I'll do with this and let you know of my progress once I have run few more tests
Thanks a lot

Just coming back quickly on this cbgallery.save.success

Could you implement a simple success joomla alert box to warn the user that the item has been successfully edited and that he can click on finish ?

That’s the point
People get wrong the visual feedback thinking it failed
That brings multiple clics that I’d like to avoid.
So could you add a language string to display somewhere explaining the saving was ok and that the user can leave the page or go to the next item ?