Go to the Fab store and add the Metahuman Plugin. Then, in the Epic Games Launcher click the reload button for your Fab Library. The Metahuman Plugin should appear. Click ‘Install to Engine’ on the Metahuman plugin. Launch your Unreal Engine Editor again, then go to Edit: Plugins and check the box by your Metahuman Unreal Engine Toolkit to enable. Click Restart Now. Open your scene. Right click in the content browser, and you should have your Metahuman Animator option there.