A process flow diagram 3 is a graphical representation of the processes that occur in a company. It is also known as a workflow diagram. Process flow diagrams are useful for different purposes. They can be used by managers, employees, and consultants to analyze the current state of any project or business. For example, when you want to find out what the current status of a project is and if it’s on track to meet its deadlines, you can use this type of diagram to identify bottlenecks or delays in the process and see if they are affecting other parts of your project or not.