You can rearrange the layout of the Main window. This includes detaching and moving a pane to a new position away from the Main window and reattaching or "docking" it again. You can resize and move panes and you can show or hide several of the window panes. Before you make your changes you can choose to save the new layout as your custom layout. You can also reset the layout as it first appeared.
Click the title bar of the pane and drag it to the desired position in the window.
Note: the Main List View can not be moved to a new position but you can resize it by clicking the side and bottom bars and dragging the bar to a new position.
Click the title bar of the pane and drag it to the desired position away from the window.
Click the title bar of the pane and drag it to the desired position in the Main window.
Click View | Layout and select Reset Layout.