I prefer to have my panel be about 400 px wide and located in the top left of my desktop. I installed Lubuntu 20.04 and moved the panel to where I want it, but now after I boot, the panel is in the center of the desktop. I have to open configuration, move the panel to the bottom of the screen, then move it to the top. Then when I reboot, I have to do same thing again.

Link to JPEG of desktop screen capture.