Don't know if this is correct but this is what I gathered from the video: look straight ahead wherever you are (in front of your computer, sitting/standing holding your phone, whatever) but try to observe everything you can see in your field of vision without moving your eyes. For me rn I can see the beer and tea in front of my monitor that I want to drink, the synth keyboard that I want to start making EDM with, the travel guide on my bookshelf to Peru where I want to visit in the next year or two, the stack of bills/tax paperwork that I should get to soon, the nudie pic of Belle Delphine taped on my wall that I've been trying to replicate with AI, the headphones I've been using to listen to audiobooks to trade reviews for my audiobook... Take ALL of it in, don't focus on any one thing too long. See how much MORE you can notice, too.
There's so many things I could be focusing on, but it can be beneficial to zoom out and not place emphasis on anything over another for a little bit. Hold each item/thought briefly with equal weight, then when you eventually zoom back in you can choose which thing you want to focus on, instead of whatever grabs your attention first (probably your phone's numerous notifications).