A process flow diagram 5 stages template is a visual tool used by companies to help them see the various stages of their business. It helps them to see how their business flows from one stage to the next. A process flow diagram 5 stages template is a visual tool that allows companies to see how their business flows from one stage to the next. This tool helps companies get a better understanding of where they are in their life cycle and what needs to be done in order for them to get where they want.