The initial one off set up cost of this object.
The cost of processing a Work Item at this Activity based on time. So for each simulation time unit that a Work Item spends being processed by this Activity the cost.
Usage Cost Per Unit
The cost of processing each Work Item at this Activity.
In Simul8 2009 and higher, double click in the usage cost per item value box to enter a Label so that a different value can be used for each Work Item.