This cross-functional flowchart for customers demonstrates how workflows extend from one department to another, which can aid in effective process mapping. Cross-functional flowcharts are detailed diagrams that can organize a business process and flesh out your project plan. A cross-functional flowchart is a graph that documents a process and divides it into swimlane sections. Because of this, it's also known as a swimlane diagram, process flow diagram, or cross-functional diagram. A cross-functional flowchart reveals the individuals or departments carrying out the steps or activities to complete the process through those swimlanes.