In his first week as production manager for a manufacturing plant, Clinton has already noticed an "us-versus-them" mentality among the various units on the floor. When he looked back at past performance over the last five years, he could see that the same number of employees used to be far more productive, but when he started asking questions about the decline, he heard nothing but blame and finger-pointing from unit managers. Clinton wants to bring together representatives from all of the units to discuss the issues and make recommendations for solutions. Which horizontal linkage device would work best in this situation