touchpad is working like this :
Center of the switch screen : touchpad move. You can move cursors, etc.
each corner of the switch screen : Touchpad Press, one button per corner. Some games check the location of your finger when you press the touchpad, it's often left/right, but some games uses each corner to get up to 4 additional buttons. If you only need left/right detection, press either top or bottom corner of the desired side.
I have a question too :
Is there a way (button combo maybe?) to display Chiaki settings without closing the connection with the console ?
It would be useful to change the stream quality on the go, if the connection is too slow then try another resolution/frame rate while playing, and not having to exit game, shutdown PS4/5 completely to re-wake it up using chiaki.
Sometime when playing over WAN, my phone data speed is not stable, having an option would be nice.
I thought, maybe an extra long press on PS button ?
say, for 6-10 seconds ? it would do nothing PS side, except going to main menu, or pausing the game while displaying side menu (depends whether it's PS4 or PS5).
just an overlay to change chiaki settings without quitting