Let's say a pair of words about these flowchart blocks.
PedSource block generates pedestrians. It is usually used as a starting point of the pedestrian flow. In our example, it models passenger arrival.
PedGoTo moves pedestrians from the current location to a new one. We add this object to model how passengers move from the entry to subway trains.
PedSink object disposes incoming pedestrians. It is usually used as an end point of the pedestrian flow.
Please refer to Pedestrian Library Reference Guide for the detailed information about all Pedestrian Library blocks.