I want to split the window of my ubuntu 20.04 desktop into four parts. I looked for possible approach as in this question. First of all, I am not able to get the options as shown in the settings/appearance section of the above question. secondly, the unity-tweak-tool is not accessible through the terminal(maybe I don't know the proper way to access it).
Any help is appreciated. NOTE: I could ask in the same thread of that question, but the reputation is restricting me from doing that.