How do I prevent User 'A' from seeing User 'B' /home contents

["Wathen, Metherion" <MWathen@bsalifestructures.com>]

Hi all,
I need to know how to change permissions of each user so that
they only see their own home directory. As I write this i'm thinking
that I have to change the groups they are in, is that correct?

Any additional advice or correction is appreciated.
mw

its okay to cc: me directly