To use Header or Footer Theme Options, set Header (or Footer) in "Blocks & Menus" to "- use theme settings -".
To change site logo, site title and description, go to "Appearance" >> "Customize" >> "Site Identity".
Header Top Bar
Header Top Bar is located above the header.
Social Links are based on Site Social Pages fields at the bottom of the "Header & Footer" section.
To show Top Menu you have to create it in "Appearance" >> "Menus" and assign items to it.
Footer Widget Area
Activate Footer Widget Area and set layout you like. Then go to the "Appearance" >> "Widgets" and populate widget areas.
Footer Bottom Bar
See "Header Top Bar". All options are very similar.
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