The secondary window is a good way to look at short and long term trends at once.
The display is controlled through the chart contextual menu or the main menu, by selecting a period of time to display. If “None” is selected, the window is hidden.
The keyboard shortcut “R” is another way to simply toggle the auxiliary window on and off.
The auxiliary window display period can also be controlled with the same keyboard shortcuts as the main chart, by simply using the “shift” key.