How to enable Google Maps' location sharing feature on your phone right now

Did you hear about that saucy new Google Maps feature that will let you easily share your real-time location.

As usual with such new features, it's rolling out in waves as a staged rollout, which means that you might or might not get it earlier than others. 

Well, the CIA already seems to know where you are at any point of the day and what you're doing exactly, so why not share your whereabouts with your immediate kin while you're at it? 

However, there seems to be a neat way to enable it right now. Discovered by Reddit user usuallymatt, ...