The “sandbox” is where you can create pages and request others to review before adding them to the main website. This URL (http://www.northbaycommunicators.org/sandbox) isn’t linked to the outside so it shouldn’t be found by search engines. Just create a new page and specify the “sandbox” as the parent. Once it’s ready to go live, all you need to do is edit your page and change the parent to the appropriate parent page (Tools, Resources, etc.).
Pages currently in the sandbox: