What I have done to obtain an ADVANCE s curve is to export the activity, start date and finish date, to excel, and make a formula that calculates the distribution of that activity in time with "IF". In columns, the time frame. then I compare the time frame with start and finish date, and it gives me the % of advance of each activity across the time. Then I find the incidence of each activity based on ManPower for example, and make a SUMPRODUCT of the incidences with its advance distribution, and finally obtain a beautiful and realistic s curve of ADVANCE. I can show you the excel file if you want.
Dont have information about resources S curve like Primavera does.
victormarcel@yahoo.com