The navigator manages the file data in a tree structure. At the bottom edge, there are three tabs (four after the calculation). Use them to switch between the tabs that control the Data, Display, Views, and Results.
The Navigator - Data manages the model and design data as well as the load cases and design situations. To modify an object, double-click the item. A dialog box is opened where you can edit its parameters. When you right-click an item, a shortcut menu appears with options to modify the object, create a new one, etc.
The Navigator - Display controls the graphical display in the workspace. Using the check boxes you can switch objects and attributes on or off in the graphics.
The Navigator - Views manages user-defined views as well as various settings of visibilities.
In the Navigator - Results, you can select the results that are to be displayed after the calculation.