I've just stumbled across the option to have a Speakers' view while running
the presentation through two monitors, in the Set Up Show menu.

I run presenations using a projector with a laptop. I use the monitor out
port to connect the projector and then use the signal toggle switch to send
the signal to the projectors as well as the laptop's screen.

Is there a way to set up this configuration so the the projector is the
second monitor and I can have Speakers' View on the laptop?

Cheers.