Sometimes a plot does not generate a waveform. I suspect it has something to do with units. Sometime when I start over, or change the order it works, but cannot figure it out. I have attached an recent example. Using 0.96 (build 4909).
You just zoom on the chart that it concerns Scale: if you roll your mouse wheel it zooms both axes together. If you hold 'control' keyboard key (CTRL) at the same time it just zooms the vertical axis;if you use the mouse wheel holding the 'shift' keyboard key (↑) it zooms the horizontal axis. You can know more at this link https://smath.com/wiki/Graphs.ashx