So I just bought a Yamaha RX-V379 not too long ago. Everything works fine, HDMI 1 and the hdmi output to the TV work fine. It's only when I try to use HDMI 2, 3, and 4. How do I use them? Are they there just for show? Because there is nothing on the remote that lets me change the HDMI inputs. I have a Switch and my laptop plugged in, and whenever I want to use one or the other, I have to plug in their specific HDMI cable. What can I do to use the HDMI 2-4 inputs?