With the Scroll tool, the user can move the current chart viewport both vertically and/or horizontally.

The Scroll tool is selected through a button located on the toolbar of the chart viewer form:

When selected and the mouse is clicked on the chart area, the mouse pointer changes to a "4-arrow" indicating the action performed:


This tool operates in a "drag-and-drop" mode: just keep the mouse clicked-down, move the mouse around to scroll the viewport as desired and drag to terminate the action.
During dragging, the chart is automatically refreshed.

Please note that when scrolling horizontally, the time scale (X axis) can never go negative.