Before anything else, run the executable file and extract the contained files to a preferred location. The first method involves using a CMD script. Manual updates will still be possible if you change your mind later on. To help them out, Microsoft has released a Blocker Toolkit that provides an easier way to add a Registry value that will prevent Windows from updating the browser automatically to the Chromium version. While it is generally seen as an improvement over the EdgeHTML variant, organizations and even some home users may wish to stick with it.
Microsoft's Chromium-based Edge browser will see its first stable release in January 2020, at which point it will be delivered automatically via Windows Update.