Well, this is PID tutorial, not basics, they can not include everything, though they have mentioned it:
>> First, change axis properties to have a better view of the simulation results. Right-click on the border of the XY Graph and uncheck the AutoScale X property under the X Scale option
You need to select scale limits yourself, unchecking autoscale just prevents resetting range to maximum every time it updates graph data.
Graph palette is usually helpfull.