In this interactive 2-hour workshop, participants will learn about about bystander intervention and its larger role in ally ship. “Step Up! Be a Leader, Make a Difference” is a prosocial behavior program designed by the University of Arizona C.A.T.S. Life Skills Program. This workshop targeted at professional scientists, engineers, and scientific workplace presents an evidence-based framework to remove the burden from the victims of harassment. We review the background and theories of microaggressions, the bystander effect, and social tendencies that prevent bystanders from intervening in non-emergency situations of harassment. We review the 5-step method of the StepUp! training model, and discuss how to define standards of behavior, put plans in place, and empower others to StepUp! Participants will then explore a toolkit developed by members of the Canadian Centre for Diversity and Inclusion that examines conflict generated by diversity. We will dive deeper into the relationships between personal identity and conflict, and how our world experience and background influence how we approach conflict differently. Most importantly, we will present a model of an ally, how bystander intervention plays a part in ally ship, and review the strategies on how to become an effective ally for individuals and groups that need a stronger voice.