ventoyplugson.exe is not on the USB key but in the ventoy directory (in the same place as ventoy2disk.exe).
When you run this file, you'll access a configuration menu open in your web browser. On the left choose 'Global control plugin' and scroll the windows down to find the VTOY_FILE_FLT_EFI configuration options.
When you run this file, you'll access a configuration menu open in your web browser. On the left choose 'Global control plugin' and scroll the windows down to find the VTOY_FILE_FLT_EFI configuration options.