Using TIVO remote to switch AV devices

Hello, apologies if this has already been asked/answered but I could not find a topic on it.

I have set up my Tivo remote to control the my TV, but I cant seem to find the button which switches devices on AV. I have to get up each time and physically press the button on my TV to switch my HDMI devices so I can play on the PS4 or switch to my NowTV box.

Is there not a button like on the sky remote where you can switch between devices on the TV?

Just to clarify I am not trying to control the AV devices, just switch between them using my Tivo remote..