Qualitative and quantitative goals will help you set the target. Your undertaking will set out to achieve these goals, and you get something to measure later on.
Of course, investigating the root causes of the waste is necessary. For that purpose, Benjamin Sweeney, author of Lean QuickStart Guide, recommends the fishbone diagram.
We recommend watching this video on the fishbone diagram to help you visualize it.
It is only 1:20 long.
Photo by freepik on Freepik
Reference: Lean QuickStart Guide: The Simplified Beginner's Guide To Lean (QuickStart Guides™ - Business) by Benjamin Sweeney. ClydeBank Media LLC, 2015.