How can I record manually using Window's 10 inbuilt screen recording

I want to use the windows inbuilt recording tool which they provided in Windows 10 for recording my screen. But, not just during the time I play games, also for other purposes as well. But Win+Alt+R doesn't seem to work while not playing games. How can I use Win+Alt+R to record my screen manually and not use any external tool like (Fraps, CamStudio).