How do I remove the sidebar from a page?

 If your site normally has a sidebar and if you wish to remove it on a page by page basis, first go to Pages from your Dashboard sidebar and then click the title of the page you wish to remove the sidebar from.

Underneath the editor you will see a section titled Catalyst Post/Page Options. In this section there use the Layout dropdown and select no_sidebar.

This page will no longer have a sidebar and the content will span the full width of the page