Are these theoretical profiles separate users? If so, In the Users folder there's a folder called "Shared." If you drag a file there from one user, other users are able to access it, but only the original user has permission to alter it. It's possible to change the permission from the finder's 'Get Info' window, but I'd suggest using the terminal. Navigate to the shared directory with this command:
Now list the files in that folder by typing 'ls' and hitting return, then take a look at the name of the folder that you put there.
now enter the following command:
Code:
sudo chown -R yourshortusername foldername
Of course, you need to replace yourshortusername with...well...your short user name. And in place of foldername put down the name you found when you used the 'ls' command. It should ask for your password and once you enter that it will fix the permissions so that the new username will be able to alter the files.