How to reverse / invert the y-axis?

To flip or reverse the y-axis:

1. Select the y-axis on your Time chart.
2. Switch to the Presentation properties tab and locate the Scale panel.
3. Under 'Reverse' select 'Yes'. (in pre-1.26 version there will be a checkbox only)

See here pre-1.26 version view

 

For more information:

Elements of the chart