Credited, Not Flexible, Explained: Lindiwe Achterberg, Casimir Beng and Anneke Tolan on a rostering app's weekend fairness threshold and what it does to a worker's appraisal Resolving to Credited, Not Flexible, Explained: Lindiwe Achterberg, Casimir Beng and Anneke Tolan on a rostering app's weekend fairness threshold and what it does to a worker's appraisal…