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20 people walking a process is definitely too many. Ideally, 6-11 people walk the process. If the numbers approach greater than 12, I would work with the internal resources to start to be a bit more selective.

Tracy O'Rourke

Tracy is a Managing Partner & Executive Advisor at She is also a Lean Six Sigma Green Belt Instructor at University of California San Diego and teaches in San Diego State University’s Lean Enterprise Program. For almost 20 years, she has helped leading organizations like Washington State, Charles Schwab and GE build problem-solving muscles.