Some new hires introduce themselves to co-workers over coffee.Jennifer L. Rosato Perea wrote a manual.“It’s a PowerPoint presentation that I’ve given to all the staff,” said Rosato Perea, the new dean of DePaul University College of Law.She will also give the presentation to faculty. She calls it “The Owner’s Manual to Dean Jenn.”“It helps them get to know my style a little bit,” she said. “How I work, how we work in teams and generally the expectations.&rdquo …