If you select the TOP FOLDER and then a user, this will lock your entire site.
It is not obvious either from the PDF help nor from the videos that if even one user is selected for the Root, the entire site is locked. This should be, to borrow from an old song, in capital letters and quotated in the Help file and in the program.
It took way more time than it should have chasing down the reason why the entire site was password-protected.
Given the difficulty this can inadvertently cause, is there any particular reason why the root directory is selected by default - and must be de-selected on a user-by-user basis?