After you customize session files or the Reflection workspace, you can bundle the customized session and settings files into a deployable companion installer package (.msi) to make it easier to deploy to your users. You can deploy companion installer packages separately or you can add them to a customized installation. You can also create and install packages at any time after the initial installation. See Package Sessions and Custom Settings Files
You can also create a Microsoft transform (.MST file ) to customize how Reflection is installed. for example, you can specify the installation directory, or remove or add commands from the Windows Add or Remove Programs list. See Modify the Installation.