$3.(20$ points$)$ Rocket's Radios manufactures marine radios for sports fishers $.$ Rocket operates a live help desk manned by two operators $.$ The employees receive telephone calls from customers $,$ but if both are business the customer is sent to a hold and answered on a first come $,$ first served basis $($FCFS $).$ If a customer has a simple question $,$ the operator answers the question and ends the call $.$ If it is a complex question $,$ the call is forwarded to the appropriate office and the operator takes the next call $.$ Using a swimlane BP chart $,$ map the process involving the customer $,$ operator $,$ and specialty office $.$ Then answer : what could Rocket use to evaluate the system to determine the best number of operators $?$