Local settings are settings that affect a particular post (or page, product, CPT item, etc). Thus, they override the global settings and have a higher priority.
Using the Footer section, you can change the type of footer on the current page.
Using the Navigation section, you can change the type of navigation on the current page.
Using the Page Header section, you can add a page header to the top of the page.
Using the Global Settings section, you can override some general settings.