As we have arranged an sftp upload system through ftp port for our Galaxy instance, we would need to customize the Upload File tool form, so that a few more line explain how-to-do in the FTP section of the form, in addition to the "This Galaxy server allows you to upload files via FTP. To upload some files, log in to the FTP server at 127.0.0.1 using your Galaxy credentials (email address and password)."

I dug into

/home/galaxy/galaxy-dist/static/scripts/mvc/upload/upload-ftp.js

and 

/home/galaxy/galaxy-dist/static/scripts/packed/mvc/upload/upload-ftp.js

but the changes I tried into these files do not show up in the tool form.

If someone can indicate the right way to intercept this content and enrich it as mentioned above,  I would be grateful !

Cheers

Chris