To see the Mac desktop and the virtual machine desktop at the same time, switch to Single Window view.
In Single Window view, the virtual machine appears in a single window that you can resize and move with the mouse.
In Full Screen view with the Full Screen title bar, select.
In Full Screen view without the Full Screen Minibar, use the keyboard shortcut +Control+F to switch to Single Window view.
In Unity view, use the keyboard shortcut +Shift+U to switch to Single Window view.