Chart panning is used to drag the data shown on the chart backwards and forwards in time. Chart panning is used when you want to see older data than what is initially shown on the chart. 

To pan the chart, position your cursor on the main chart pane and drag and drop the data to the left or the right. 

To reset a chart that's been panned, look for the double arrows at the very bottom right portion of the chart (circled in BLUE above). Clicking these arrows will return the chart to the initial setting.

Chart zooming allows you to change the scale level on the chart (magnify the area shown). To zoom the chart, drag and drop either the time scale at the bottom, or the price scale at the right.

To reset a chart that's been zoomed, double-click on the time scale or the price scale (whichever needs to be reset).