Hi Neil.

I don't run multiple users on my computer so I'm not an expert on this. You might find that OS X doesn't provide quite as much as the functionality as you'd like. If this is the case I'm sure you could find some software to fill the gap from versiontracker by typing a search for permissions.

I've tried to answer your questions below.



1) More folders like the shared folder that everyone can access and
read/write to so that besides the overall shared I can have shared category
folders.

I believe all users can access folders stored directly on the hard drive and on all non-user & non-system folders for that matter. If you want folders in a specific location that would normally be inaccessible you could make multiple aliases of a folder stored directly on the hard drive.

2) Folders fully available to some users but not others (as we did in the old days of file sharing where we created groups of users and gave access to the relevant groups.) OSX seems to work on this principle but how do I set up a group comprising, say, 3 users so that I can set folder access to allow any of these three users full access but not the other (say, two) so not
just give access to "Others".

You can configure folder permissions by using get info on a folder from the File menu in the finder. You will probably have to click on the triangle tabs for "Ownership and Permissions" and "Details". I'm not sure whether you can assign varying permissions to different users in this way but you can certainly have specific permissions for one user different to all other users.


3) I also seem to remember being able to set folder privileges to allow certain users to be able to read/write files in the folder but not be able to move/rename or delete the actual folder. How does one go about this in
OSX.

I'm not sure if this is possible using get info. You can certainly configure users to only be able to read items in the folder but I don't think you can allow read and write without giving the user the option to delete the folder or the contents.

Hope this helps
Ruben A. Franke