There[SQ]s no such thing as "Chrome OS Flex for Windows." Chrome OS Flex is designed to run *instead of* Windows (or macOS, or other operating systems) on existing computers. It[SQ]s not an add-on or a program that runs *alongside* Windows.

Chrome OS Flex is a lightweight operating system based on Chrome OS, Google[SQ]s operating system for Chromebooks. It[SQ]s intended to breathe new life into older computers by providing a fast, secure, and simple computing experience. If you install Chrome OS Flex, it will completely replace your existing Windows installation. You[SQ]ll need to back up any important data before doing so.