The Pages window has sidebars on the left and right of the document. To see them, do any of the following:
Click in the toolbar, then choose Page Thumbnails, Table of Contents, or Show Comments Pane.
Click in the toolbar to show formatting controls for whatever is selected in the document, like text, a shape, or a chart.
Click in the toolbar to show controls to format the document—set page orientation and size; set margins; and add headers, footers, and document sections.
Note: If a sidebar on the right is open and you click its icon in the toolbar, the sidebar closes.