Introduction
It is highly recommended password protection be used so this is not viewable by anyone.
In the example provided the example cPanel account user will be cpuser and the user home is /home/cpuser
Procedure
As the user run
mkdir -p /home/cpuser/public_html/webalizer
cd /home/cpuser/public_html/webalizer
ln -s /home/cpuser/tmp/webalizer ./stats
Then log into cPanel as the user and use "Directory Privacy" to password protect /home/cpuser/public_html/webalizer
Now if the user's main domain is cpuser.com you can visit http://cpuser.com/webalizer and when prompted for a user and password login and then go to the stats folder.
Note: I may be possible if disabled the following will need to be added to /home/cpuser/public_html/.htaccess
Options +FollowSymLinks