To create a page with this layout in Cascade: New > Page > Right Sidebar Page
Although the homepage has a sidebar, it is also possible to use a layout that incorporates the right sidebar on lower-level pages. In this case, the left navigation will not be included on the page.
Sidebars should be used according to their intended purpose. Left sidebars are intended to house secondary navigation. Buttons, content, and call to action items should be placed in the centre content area or right sidebar.