Kadence Page Settings
Global Page Settings
Navigate to Appearance > Customize > Page Layout
These are the global settings for your pages, and what settings you choose here will apply to all of your pages.
Individual Page Settings
There is a way to override some of the global page settings if you want certain pages to have different settings. Each page has a Page Settings section where you can override the global settings.
Here's one example: In the customizer, my global settings page layout is set to "normal" because I don't want a sidebar on most of my pages. But I would like to add a sidebar to my About page. I go to my About page editor and edit the page settings to set the page layout to "Right Sidebar". Now my About page is showing a sidebar while the other pages are still using the "normal" page layout.
You can change the page settings for an individual page by clicking on the Page Settings icon (page with pencil) and opening up the settings. You can make your changes here. This will override any global page settings you set in the customizer.