Advanced settings

Show in sitemap: To set a page's visibility in the Sitemap you got to check the "Show in sitemap" option.
Homepage: Check this option to change the "normal" page into the homepage. Remark that you can't remove a homepage, unless you assign this status to another page first. Only 1 homepage per language is allowed.
Active: If checked, the page will be published, otherwise your page remain hidden for public. This option can also be toggled with the "Hide" and "Publish" icons.
Language: The language selected defines in which language your page will be.
Navigation branch: This specifies the branch to which the page belongs.
Accesskey: Accesskeys are used by people who are visualy impaired, the character filled in in this field can be used in combination with the "Alt" button to access the page.