My system is Apache 1.3.27 using RedHat 7.2 and Cpanel 5.3.0-S116 if this makes any difference.

Problem is, I used cpanel to add users to the wheel group, just my own accounts , and only half of them work. When I ftp to my accounts, some of them allow me to go to lower directories, but some don't. I've been researching for a few weeks trying to learn exactly what is done to add users to the wheel group and it looks to me like it all boils down to the /etc/group file but there must be something else involved because each user that I added to wheel is listed on this line:
wheel:x:10:root,premier1,securep, and several more

All together there are 14 users in the list, but some of them don't have ftp access to lower directories. Where else should I be looking?

I was searching the net and found this site.