Before this you had to add hiignite by hand, with a server address. Now you open Plugins in ChatGPT, search Hiignite, or any other keyword like coaching, and click +. This link goes straight there.
That also removes the catch from my last post: you can do it in the phone app now, not only on a computer. A free ChatGPT account is enough, and you don't need a hiignite account until the first time you save a program.
What it can do hasn't changed. It saves programs and adds exercises that are not in your library yet. It still cannot see your clients, messages, form checks or billing, and nothing reaches a client until you assign it yourself.
Claude isn't part of this. There you still add it by hand, as a custom connector. The steps for both are here.