I'm using MacBook's keyboard to work on it, but I'm also using the extended display for work. I'd like to turn off the MacBook's screen without closing the lid while using the external display.
My searches so far have revealed that this is not supported (unless I mess with some terminal commands, which I don't want to as I'm a relative newbie with Macs), but I'm wondering if I may have missed some source? Can anyone advise?