Run the ChatFCP app to make Final Cut Pro recognize the app’s workflow extension.

The default chat website is chatgpt.com

Run Final Cut Pro and choose Window > Extensions > ChatFCP (or choose ChatFCP from the extension button’s menu). Your chosen website will load into the floating workflow extension window in Final Cut Pro.

The workflow extension window can be repositioned, resized, and saved as part of a Final Cut Pro workspace layout:

The new workspace can then be chosen from the Window > Workspaces submenu.