Robert, glad to see you’re giving leveling a try. It takes a bit to learn and be comfortable with it, but if you can get through that you’ll never go back. There are several MPUG recorded webinars that can help, including a three-part series I did a while back. It was a while ago but the function hasn’t changed.
Now, about that ehrs. Not sure where you are seeing that but e means elapsed which means all time. So, 24 ehrs is a 24 hour day, even if it isn’t a business day.