I have a laptop that i attach via HDMI a second screen to when i'm at home. The thing is that the monitor is physically to the left of my laptop, that is just the way the desk is arranged, and that is very difficult to change (the keyboard is with the notebook and it would be uncomfortable to swap notebook and the screen around).
I can, of course, chose to have the HDMI screen to the left of my notebook screen, but that causes it to be the first screen (with the menu moving there), that is not what i want. I want my first screen to remain my notebook screen, and the second screen to be to the left.
I am running XUbuntu
$ cat lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=18.04 DISTRIB_CODENAME=bionic DISTRIB_DESCRIPTION="Ubuntu 18.04.2 LTS"
Note: This is not a duplicate of Make second monitor show workspace that's on the left of primary monitor