Hi,
As I see it it's like this
Some customers effectively give each of their users a folder in PF to store data (rather than say PST)
So what they're wanting is that when each of those folders is enabled for archviing that folder is represented as it's own archive (so that the user see's it clearly as such when doing a search). e.g John Smith, Pauline Jones
However if you didn't use auto enable then all the folders will be show as one entity ie 'public folder'