Add the pagename.html file in assets/pages/ with a front-matter:

---
layout: layout-name
title: Page Name
permalink: /pagename/
---

• layout
  Basic layout is default, if you need a new one add a file layout-name.html in _layouts/ folder.

• title
  Used in status bar.

• permalink
  URL of the page.

Custom variables

• script: [ 'customscript.js' ]
  If page needs custom scripts add here the filename along with the file in assests/js/.

• description: page-description
  Used in page meta description, override site.description.

Site menù

You can add and edit menù links, just edit the file _data/menu.yml:

- name: textlink
  url: /pagename/
  description: Search page

• name
  Clickable text on the menù.

• url
  Page permalink.

• description
  Title of the link.