1.The above right mouse menu options will appear when no geometries are selected. To deselect geometries, go to Select from the menu bar and click None.

2.Right mouse button click on a viewport also provides quick access to switch between views, shaded mode, toggle Grid and WCS visibility.

3.If you do not see the options on Right mouse button click you would need to have the Show pop-up menu selected under Home > Options > System > Mouse Settings)

Viewport