Ọzụzụ Sigma Black Belt nke isii anyị na-enye ihe ọmụma kpụ ọkụ n'ọnụ nke ụzọ isii Sigma nke nghọta na ụkpụrụ (na-atụle na-akwado ngwá ọrụ na ngwaọrụ). 
Ozuzu Sigma Black Belt nke isii anyi na-enye ihe omuma kpu oku n'onu nke uzo isii Sigma nke nghota na ukpuru (na-atule na-akwado ngwa oru na ngwaoru). 