amazing, one button on OBS making my life so much easier with my vertical monitor! Honestly having a second monitor vertical is a game changer as I use it for streaming, discord, reading webcomics and consuming all kinds of media intended for mobile.
The chat dock? It is auto added when you login to the twitch or RU-vid service in your stream settings. (If you just type In a stream key instead, it doesn't work)
Ive selected portrait and I still cant make it any slimmer or taller. Any ideas? When I put it on my vertical monitor it still shows slighty on my other screen
Part of that may have to do with dock arrangements, but you may also try to toggle the restore button (square icon in the upper right next to minimize)
BE surer you followed the video to put it into studio mode, next you have to move everything around it. You cannot move the preview window itself, you have to move literally everything else around it so that it is left where you want it.