When booting an ISO file I wanted the installer to ask what product edition to install.
Do the following to make this happen:
Create a file called ei.cfg
put this in the cfg file:
I then used a free program called AnyBurn to copy the file to the sources folder in the ISO image
After that I copied the modified ISO file to my Ventoy folder
If you are unfamiliar with Ventoy I highly recommend it as it lets you have several ISO files on one USB stick and you can boot any one of them