Theresa,
Basically, if I am splitting a date that is either before an Agent's hire date or after their termination date, the agorithm will not consider the impact that agent's skills, contract availability, etc. will have on the calculated distribution of those volumes/staffing needs amongst the child Activities of that multi site activity; It would act as if, for those days, that the agent doesn't exist.
Does that answer your question?
-TT