Singles and Unique Pages are pages on your site that have a unique design or serve as a landing page for other content.
You can find this content by going to Entries > Singles and clicking on the page you wish to edit. It is not possible to create a new page in this section. To create new pages you should go to the correct channel of content, such as Advisors, Team, News, or create one off pages in the Pages Channel.
The unique pages you can edit here include:
The fields for the entries are self explanatory. The Accredited Investor page however has one field hidden in another tab. This is the terms of service. You can find this by clicking on the terms tab in the publish page.