To foster teamwork and a culture of quality improvement, a new director of an ambulatory care center in a hospital has begun holding twice- monthly management team meetings, consisting of several physicians, nurses, physician assistants, financial managers, and others. Attendance at these meetings has been erratic, and enforcing attendance is difficult because many of these people report to their discipline chiefs rather than to the director of the center. What advice would you give to this person to promote more consistent participation.