PageLines offers the flexibility to setup your sections on a page-by-page basis, but you can also set up default settings that will control your sections globally. These default settings will be overridden if set on an individual page or post.
Setup Site Defaults
From your WordPress Administration Panel:
Select the "PageLines" panel, then "Meta"
Select the "Site Defaults" tab
Select the Section you want to configure
All of your activated Sections will appear
Select the Settings you want to change
You will see the exact same options that you do in the individual PageLines Meta Settings