Hello @AtRattler
I'm not sure you can edit steps necessarily but you should be able to edit distance. It depends on the situation as you can change activities to get rid of too many steps if you need to.
In the App on your phone, tap the exercise you want to edit, then the 3 dots in the top right corner. Tap Edit Exercise and then you should have the option to change the start and end times and maybe distance, depending on the type of exercise.
I hope that helps a bit.
