Create user who can access only backup

of all the servers I am looking after, only problem I am facing as of now is
providing a weekly copy of accounts from backup drive to assigned employee
who would download it to 2 office locations via ftp.
What I do is, move the tars to a dummy sub-domain, chown them and he downloads them.

I cannot share root information with him, neither he is familiar with root privileges
and its importance nor I am authorized to allow him with root login.

Is there a possibility I create a cPanel user and allow it only with access to backup drive ?

any possibilities ?

 

I am not asking about account creation

I am concerned about having another user who is restricted to login only to /backup/