I am trying to change some of the workspace options in Ubuntu 17.10. I do not particularly like many of the changes to the default settings. In particular, I do not like how workspaces are only "vertical" now and not in an X by X grid anymore. Also, I want to change the behavior that seems to prevent one of my two monitors from "participating" in the workspace.
I have seen a few people explain that this can be fixed with the gnome-tweak-tool such as here: How can I make gnome-shell treat both monitors in the same way?
However, when I try to change the settings under the "workspaces" tab, all the options are gray and cannot be clicked on.
Is there a way to make the workspaces tab active, so I can change these settings?