1Open the nav manager
Click Website in the sidebar and scroll to the Top bar navigation + Footer navigation cards.

public/help/nav-builder-1.png — The Top bar navigation card with 3 parent items listed (e.g. Buy, Sell, Contact); one expanded showing its children.2Add a top-level item
Click + Add menu item. Set the label and the link type:Internal path (e.g. /browse/vehicles), External URL, Custom page (pick from your custom pages), or No link (a dropdown header).
3Add children
Expand a parent and click + Add item, or use Bulk add to paste many labels at once (one per line — handy for a long list of car makes).
4Mega-menu sections
For a multi-column dropdown, click + Add section inside an expanded parent. Each section gets an optional label and a column count (1–4). Drag items between sections via their edit dialog. Sections drag-reorder among themselves.

public/help/nav-builder-4.png — An expanded parent showing two sections side by side, each with a label, a 'Cols' dropdown set to 3 and 1, and 4-6 items inside.5Drag to reorder
Top-level items drag among each other. Children within a section drag among each other. Sections drag among each other. All reorders save automatically.