Hi there, does anyone know if the Task Effort can be computed from a Task Property/ies? I am trying to Set Effort= Drilling Metres / Drilling_Rate e.g. I have a 100m drill hole and I can drill 20m per day so I want the Effort to be =100/20=5 days. I want the flexibility to change the Drilling_Rate and have the schedule and Gantt Chart update automatically. Any ideas?