If a graph, gauge, dial, knob or slider goes out of range, or if you want to change the range in order to improve resolution, left-click and drag over the number at the top (or bottom) of the scale and type the new value you would like to have. The scale should automatically adjust to the new value. Your change will be a temporary one, it will be lost as soon as you quit the simulation.
If you want a graph to automatically re-scale, right click somewhere inside the graph and select ‘AutoScale X’ or ‘AutoScale Y’