small screen

hi everyone, im trying to figure out something with trying to make a transparent green screen window in obs within the source name and i wanna try and get it where i have a smaller window inside obs within the main preview window and when i apply the chromakey filter i can c it in the smaller...

When i set a VST FIlter, the Studio Rack opens in a window but is to small. I can barely see what i am doing and its hard to use the plugins. When i choosed one of the plugins, the plugins opens as a big screen and i can work with it. only the studio rack is to small. I got UAD Plugins too and...