Why don’t they just use the track changes feature? That will work for changes to content.
For layout changes? Sorry, but I know of nothing off hand.
I was not aware of a feature like that, but that sounds extremely helpful! I will certainly look into that tomorrow!
We have a FREE script that will save an IDML of the InDesign document as it is opened, a backup.
For individual edits during a session, you could use InDesings track changes. If you needed to see those track changes, that is possible. Changes to geometry is bit more tricky.
Tested the tracking feature today and it works fantastically! Indesign is a bit new to me so I do not know many of its features, so this was extremely helpful in my case. Thank you very much!