Is there any way to have SHIFT + CTRL + - create an em dash in Pop_OS?

I know there is the option to use CTRL + SHIFT + U followed by 2014 + ENTER. But that’s way too long. And in keyboard settings it seems that I can only add a Composer Key? where I then have to, again, type in a numerical code. Any way to have the straight keyboard shortcut like in MacOS?

EDIT: Per two suggestions below, Command Key followed by 3 regular dashes works to create an em dash.

afa setting my own combo, I discovered AutoKey as a possible solution. Haven’t tried that route yet, though.