Run the file and either select radio button Diskimage
and include the path to your downloaded ISO image or simply select Distribution
radio button as Ubuntu and select desired version number. Once ready, click OK
to start the process of creating bootable USB stick:
This is a companion discussion topic for the original entry at https://linuxconfig.org/how-to-create-a-bootable-ubuntu-18-04-bionic-usb-stick-on-ms-windows