Sorry, I don’t understand the question. Mirrorless cameras like the R6II don’t have anything but ‘live view’. On a DSLR, live view means flipping up the mirror and opening the shutter so the live feed from the sensor is shown on the LCD. Mirrorless cameras always do that since there’s no mirror to flip up, and they have a little LCD inside the viewfinder.
So I guess the answer is if you want live view on your R6II, just turn the power to ON.