Thanks for expressing curiosity, Vikrant! I find that curiosity is a very necessary prerequisite to the perserverance required to solve a tough problem.
I understand your concern about conflicting metadata when two users on a single computer share a single CC folder. Before I start experimenting, however, I'd like to know a bit more about your concern.
Would your concern vanish if we were sure that only one user were ever logged into Windows at the same time? In other words, does logging out of Windows close all open metadata and thereby clear the way for the other user?
Or, to put it in more general terms, what does it take to close all open metadata and make the computer safe for the other user?
Your suggested solution of one user synched, the other not synched sounds quite reasonable, but in thinking about it, I realize that I'm not clear about this one point: Assume that we make a change to CC via the website: delete a library, for example. When "Non-Synched User" logs into Windows and runs InDesign, will CC synch even though this is the non-synched user?
If CC synch will not run in that circumstance, then the two-synched-users approach may be better, but only if I know exactly what it takes to "resolve" one synched user's metadata in order to make it safe for the other synched user to log in.
Once I have a clearer understanding of these points, I'd be happy to experiment and report my findings. Thanks for your help (and curiosity!).