回帖：wjwei1990:Activity Steps offer several advantages.
One, you can break down a complex activity into a series of, well, steps that better describe the scope of work. The activity name does not need to go into a great deal of detail because the steps offer additional expl .. (2017-11-21 20:23) 
if one complex activity have some steps,and the steps have no logic each other, how can i calculation the duration?