Button on Emergency Brake?

So what is the button for? Someone on the show last week complained that her boyfriend didn’t press the button on the emergency brake when he set it. I’ve never given a thought to that button, never pressed it, never touched it, and maybe I’m in terrible trouble. What is the function of that button?

The button is used to release the brake…not set it. I take it you’ve never set the parking brake then???

I suspect we’ve found another poster with an owner’s manual still in the shrink wrap!