Possibility to change 'landing' directory on ftp login for all users

This is more of a user problem which I am trying to lighten. This might belong in the reseller forum section I am not sure. Most users are confused when they land in their home dir after logging in with FTP. Many expect to arrive in /public_html of their main domain. I think it might be easier if they land in that page immediately. I know this can easily be set in their ftp client, but they don't.

Is there a way to set where Userz land when they log in with ftp (ssh should remain the home dir) ?
More advanced users may need to go up to domains or even higher up the tree of course and should still be able to do so.

Is there a way to set this as default for all Users?