HELP! PROPER TREE CONFIG EDITING (GUI BOOT)

HELP! PROPER TREE CONFIG EDITING (GUI BOOT)

Hey Guys,

Thanks to this community I've made a stable Hackintosh build running consistently for professional work flow. I want to add the graphical interface when booting. I have been following this guide

https://dortania.github.io/OpenCore-Post-Install/cosmetic/gui.html#setting-up-opencore-s-gui

However, I'm having a little trouble figuring out how to edit my config.plist to say:
Pickermode --> External

And also not sure what the middle channel should be? Anyone got any tips for this. I know it's a pretty basic task, but I'm not a computer expert so any help would be super appreciated!

Thanks

https://preview.redd.it/gjpxjbv0bh561.png?width=467&format=png&auto=webp&s=2914b63df97685b36c914acac6cc0429c9eddddf

submitted by /u/project22b
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