[Steven Zahm]

@ mauro

You have to use CSS to hide these core fields.
To hide the Department field add this to the theme’s custom CSS area:

#cn-form div#cn-metabox-section-department {
    display: none;
}

Hiding the address line fields, add this too:

#cn-form  .address-local {
    display: none;
}

I hope this helps.

ps. I am assuming this is in regards to the Form extension.