How do I expand the chat window on Facebook?

I swear I remember seeing some guy once who managed to stretch his chat window out until it took up almost half the screen. Honestly, that’s exactly what I’m trying to do, but I can't for the life of me get it to work. I actually dug through the settings and found this guide:
Click on the "Options" tab.
Click "pop out chat."
Initiate a chat conversation by clicking on the name a friend with a green circle next to her name in the left column. Begin typing in the text field at the bottom of the screen and hit the "Enter" key to send the message.

The thing is, when I go looking under "Options," there isn't any sign of a "pop out chat" button anywhere. It's just... not there.
Anyone have a clue what's going on?

Maybe you could try zooming in on the page—say, to 150%—just by hitting Ctrl and +

That’s just not what we’re talking about here.

Click "Pop out Chat.".....

Basically, it just opens the chat in a separate window—then you can just click on whoever you want to message directly.

It’s not really about zooming in or anything like that, 🤷
just a way to keep the conversation separate.

Look, didn't I already mention that there isn't any "pop out chat" option anywhere under my settings?

So, when you're browsing Facebook on your desktop and you see your friends list on the right—let's say you click on Ivan Ivano—a little chat window pops up for you to message them. If you go into the settings there, you can actually view the entire conversation history, which then opens up into a much larger window.

That was way back when. It’s over, man, just deal with it.
Seriously, Larry Ortiz5, what kind of nonsense are you even talking about? Do you actually think the chat is going to open up in some special little window... like a freaking pop-up ad or something?

So, I was sitting there, just getting settled in after about ten minutes of gaming, when suddenly—BAM—the Blue Screen of Death hits me right in the face. It’s like a sudden thunderstorm in the middle of a clear afternoon in Chicago. Initially, I thought, "Okay, let's try a different approach," so I swapped out my power supply unit. For a while, things seemed perfectly fine; I could play for two solid hours without a single hiccup. But then, just like that, the issue resurfaced. Now, I'm back to getting kicked off after only ten minutes of playtime. I'm completely stumped here. Any advice?