Follow these steps:
Download and unzip this file:
https://cluster-dns-ingress/rweb-client/utilities/MSITransformer.zip
Download the MSI to be modified using this URL:
Run this command:
.\InstallerTransformer.ps1 -f <path to MSI> -t <path to new Transform file>
The Result
The script confirms that the transform was successfully created in this directory: <installation directory>\server\web\webapps\rweb-client\ex\RWebLauncherEx.mst
After you deploy the transform file (RWebLauncherEx.mst) along with the Reflection for the Web Launcher, (RWebLauncher.msi) your custom network settings will be deployed to the user’s workstation the next time the user opens a Reflection for the Web session.
For deployment options, see Distribute the Reflection for the Web Launcher Installer.