For maximum SEO benefit, all pages of your website are discoverable by search engines. However, if you would like to instruct search engines to not index a certain page, you can do that inside of Page Settings.
1. Open Manage Pages.
2. Click the settings gear on the right of the page and go to SEO and Settings
3. Check the box to Disallow search engines from indexing the page.
Please note: This will only affect a single page. You will need to mark this setting for each page you do not want to be indexed.