I am connecting the Macbook Air to the BenQ Monitor, which I have configured as the primary display with the display extending to the internal display of the Macbook. I expect the macOS dock should appear on the BenQ but I haven’t figured out how to make it consistently appear. It seems if I move the mouse cursor to just the right spot at the bottom of the display then the dock appears and stays, but not until then. If I move the mouse to the bottom of the internal display the dock then appears there and goes away from the BenQ. Given Apple’s reputation, I am surprised by this inconsistent behavior.. or perhaps this is just user error?