Lightning App Builder is the drag-and-drop tool for building Lightning Pages — App Pages, Home Pages, and Record Pages. Lightning Pages override Page Layouts for everything outside the Details tab and are the primary UI customization tool in modern Salesforce.
- Open Setup → Lightning App Builder
Setup gear → Quick Find: Lightning App Builder → Lightning App Builder.
- Click New
Top-right of the Lightning Pages list.
- Pick a Page Type
App Page (a custom tab inside a Lightning App), Home Page (the org's home), or Record Page (a record's detail experience). Most work happens on Record Pages.
- Pick a Template
1-region, 2-region (header-aside), 3-region, etc. The template controls regions you can drop components into.
- Drag components from the left rail
Standard components (Highlights Panel, Tabs, Activity, Related Lists, Path), custom Lightning Web Components, and AppExchange components are all draggable.
- Set component properties on the right rail
Each component has its own property panel. Visibility filters (by Profile / App / Record / Permission Set) hide components from users who don't match.
- Save → Activate
Save the page. Activate scope: Org Default / App Default / App and Profile-specific. Most orgs do App and Profile-specific for fine-grained control.
App Page / Home Page / Record Page. Locked at creation.
1-region / 2-region / 3-region / Pinned Header etc. Drives the canvas layout.
Filter rules per component — hide if Profile != X, hide if Record.Field = Y, etc.
Org Default (single page for everyone) / App Default (per-app default) / App + Profile (per-app per-profile).
- Lightning Record Pages override Page Layouts for everything except the Details tab. If a button or related list isn't appearing, check the Lightning Record Page in Lightning App Builder before assuming the Page Layout is wrong.
- Component Visibility filters are evaluated per-record. Heavy use of complex filters slows down record-page render. Profile filters are cheap; record-field filters are not.
- Activation scope confusion is the #1 admin headache. "Org Default" means literally everyone everywhere, which is rarely what you want — App + Profile is almost always the right choice.