The status bar is an area of the workspace that displays the page number where you are, the number of total pages, page transition buttons, zoom buttons, etc. for view setting. 

The status bar is open by default when you open a PDF. In the View tab, click View Setting and the Status Bar items help you to show or hide the status bar. 

Like the toolbars, the navigation pane can be docked in the navigation pane or float anywhere in the workspace. You can choose to hide or close the panels that you don't need and open the ones you do. What’s more, you can also adjust the width of the navigation pane easily.

1. Viewing a panel in the navigation pane

By default, all the panels dock in the navigation pane with a set of panel buttons appearing on the left side of the work area. Do either of the following:

The buttons on the left side of the navigation pane provides easy access to various panels, such as the Bookmarks panel button and the Pages panel button. After right-clicking the navigation pane, you can select and open more panels. 

The Search box is located on the title bar at the top of the window. It enables you to quickly initiate a conversion with AI Assistant, or search commands, text, or online help based on the keywords you specified.