An answering service for a doctor's office wants to evaluate the service by simulation calls. They used past data to determine the distributions for the time between calls and the time spent on the phone with patients.

Use the table below to manually simulate $8$ calls. The time of the call and the service time have already been determined. Suppose that the office opens at time $0.$ The office has two lines to answer the calls. The service follows the FCFS rule. When a call comes, if two servers are idle, server $1$ will answer.