As chapter 5 shows, the Million Hours Campaign led by Pushkala Subramanian at pharmaceutical giant AstraZeneca succeeded because it blended the two approaches to free up employeesâ time. Top-down changes included adding steps before employees could âreply allâ to more than twenty-five email recipientsâusers had to pause, read a warning, and do an extra click. That little speed bump saved employees from thousands of unnecessary emails.