Edit Home Hub - Add/Remove

I just started using WebOS on my LG UR9000 TV and I’m trying to figure out if I can really edit it, like add and display the input and features that I want quick access to. Right now, it is shown just like the attached photo. What I want to do is remove and or replace “Home Office” “Game”, “Sports” with my “HDMI DVD-Blu-ray”, and “HDMI-FireTV”, but can’t figure out how to add both of those to this section of the home screen. Anyone know how this is done?

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