Menu Groups (/admin/menugroupbuilder) lists your custom navigation menus with Position (Header or Footer), an Active toggle and delete. Only one header group and one footer group can be active at a time — activating one deactivates every other group in that position; the active group replaces the standard navigation site-wide. Create a group with + Add New Menu Group (Title, Menu Position).

Menu Builder (/admin/menubuilder/<group>) is where you fill a group: Add to menu (Title, Select Menu Type Existing pages or Custom URL, a Select Default Pages picker or Your Custom URL field, plus a collapsible Styling section with Background/Border/Text colors, Border Radius, Padding, Margin, and Hover Background/Text/Border colors), the current-menu list (drag to reorder and nest, an edit icon and a trash icon per item — deleting a parent item also deletes all of its sub-items), Text color / Background color fields for mega-menus, and a Show on pages multi-select to restrict the group to specific pages. Pages can also pick a group directly in their own Settings > Header Menu / Footer Menu fields.