Making OBS capture ~1 minute of screen recording continuously

I'm sure there's a name for this function, but you know that thing where your screen is constantly being captured but it only gets saved if you tell it to, and then it'll save the last minute or however long the buffer period is? It lets you capture cool moments in games and stuff? Yeah, that. Is there a way to make OBS do that? If not, does anybody know of an open source application I can use for that? It'd be really useful and fun.Thanks!