Good question. I took me a bit of time to find out, but I can't tell you right now because I forgot! There was a notch, I believe. I'll get back to you with photo. I was shaking my head because it was so simple once I figured it out.
When my Creo was new, my "longest" ride was 106 km where I was left with just 6% battery when I finished through sun and rain. Elevation is just 1,154 m.
When I found my tuning, "longest" ride was 102km with 18% battery left, 1,002 m elevation.
So far, I've ridden 60 kilometers with and without motor assist and I'm pleased with the experience. 46/9t gives faster speed compared to my 52/11t, so on flats I gained a bit of advantage.