u/Alarming-Corgi4596

I have two accounts linked in my accounts center, and I am trying to remove one of them and make it it's own entity with a separate password than my personal page. All of the tutorials I've seen mention a remove button that I just can't find. Also, is creating it's own password once it's removed possible? I'm really hoping to get this done as soon as possible, so any help is super appreciated!!