You can upload files to/download files from your server using the cPanel File Manager, or FTP. With an FTP program you can easily upload/download many files/folders at once, for installing or updating UWB software for example. A great free FTP program is FileZilla.
The FTP login credentials should follow this format:
Port: 22 (to open an SFTP session)
Username/Password - these should be the same as your cPanel/web hosting username/password.