Network Simulation

I need to simulate a network A company that has three branches in three different locations. Each branch consists of a building where each building has three floors and each floor contains three switches. The staff distribution in the whole company as explained in the table below. Floor one has the accountants and the salesmen, Floor two has the engineers and the workers. Floor three has the chairmen and the assistant chairmen. You can assume that each branch has equal distribution of resources. I need to use packet tracer simulator