I want more people to have access to Cpanel, but to disable main ftp domain access because if they FTP with the cpanel user/pass they will be able to access the folder MAIL.

What I did so far: I chaged the Cpanel/username password by: ssh passwd , this way the FTP password remained as the old one. This was a solution, because people were not able to use FTP with the Cpanel password. However, in 24h the FTP password was automatically synchonized with the Cpanel password – it became the same as cpanel password.

1. How to disable main domain ftp access for Cpanel user?
2. Maybe there is a way to disable automatic ftp password synchronization?

Thanks in advance!!!