The parts of the site that appear on every page.
Header navigation
Appearance → Menu Manage builds the header menu. Add pages, custom links or dropdowns, drag to reorder, and nest an item by dragging it slightly right. Save, then reload your site.
A page that exists is not automatically in the menu — that is deliberate, so you can publish a landing page without it appearing in navigation.
Topbar
Appearance → Topbar Settings holds the thin strip above the header: announcement text, phone, email and social links. Only the fields your theme actually displays are shown, so if a field is missing here, this theme does not have a place for it.
Footer
Appearance → Widget Builder builds the footer from widget areas. Drag a widget (about text, link list, contact details, newsletter form, social icons) into a footer column and fill it in. The number of available areas depends on your theme.