I have numerous activities that contain a labour resource, say GANG1, that don't have a resource rate as a price is meaningless in this case. It's 2 men and a van, going on maintenance activities. I then know the budget of the 3d activity of work they are doing, say £6000. so I put this figure into the planned labour cost. If i then change this activity duration to 2d, the planned cost will revert to zero. I want the planned cost to stay the same, as that is how much this task will cost. Why does it revert to zero? What auto calculation is going on that I need to stop?
Many thanks in advance.