The first thing you need to do is install Screencastify.
Screencastify will also use that account to save and manage your videos. Your Chromebook is tied to your Google account. Installing Screencastify on Your Chromebook Keep reading to find out how to both install and use the app. As Screencastify is one of those applications, you’ll need to get it from the store before you can use it. The Chrome OS works with applications from the Chrome web store. While this makes them an excellent alternative to some other higher-priced laptops, it does mean that there’s a learning curve involved.
That’s because they use the Chrome operating system. Chromebooks don’t work exactly like Windows-based devices.