My understanding is that you can't use switches directly with GPO. You need an .MST file to transform the package. "Windows SDK components for Windows Installer developers" has a program Orca that is supposed to facilitate this but every link on MS site kept hitting me with an error saying I don't have permission. Today I found this https://developer.microsoft.com/en-us/windows/downloads/windows-sdk/
seems to be what I was looking for. Not sure why the link didn't work yesterday.
seems to be what I was looking for. Not sure why the link didn't work yesterday.