Menu: Window > Vertical Series Window
(standard orientation) This command positions the Series Window in the left part. The time axis is vertical from top to bottom The other windows fill the rest.
Menu: Window > Horizontal Series Window
This command positions the Series Window in the upper part. The time axis is horizontal from the left to the right. This may be helpful with long series and wide screens. The other windows fill the rest.
The positioning is temporary. The window arrangement on every start is defined in the options: Menu Extra > Options > Tab Display