Basically all you need to do is go into cpanel and..

1) Create a directory for the files
2) Create a ftp account for each consultant.

A FTP account will have
1) Host - this is your website domain (yoursite.com)
2) Username - whatever username you create
3) Password - password to verify the login

There are ftp tutorials for multiple FTP clients, all you have to do is download the program, install, and follow the tutorial.

I hope that helps, post if you need more info (try to be specific as to what you need help with)

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