Adjusting the layout
You can choose different viewport layouts by clicking Layouts on the Windows menu. For example, if you choose the Sound Editing layout, you will see two viewports (primary and secondary).
You can change the size of a panel in the UI by dragging its edges. You can also move a panel around by dragging the tab at the top to wherever you want it. Drop the panel onto one of the small white rectangles that appear onscreen to move it to a different spot in the UI. You can also drop the panel elsewhere to move it into a separate window, which you can then move onto another monitor.