Why no step count during stepper activity?

I guess that you have your hands on some bars during stepping. So the steps can't be counted.

You guess right but a least i could enter number of steps  or mean number of step by minutes at the hand of the activity .

At the end of indoor running, garmin watch ask for calibration. You can imagine something similar .. it 's sad that you can only monitor  Heart Rate. I have to maintain a file on my smartphone to assess my progress