When the company hires new salespeople, a lack of communication can happen since they come from different environments. When this happens, the sales manager plays a significant role in training and aligning goals, so every team member is on the same page. Mentoring and interaction with other employees and supervisors can help shape work styles to the company's culture. Moreover, when there is an interaction between new and old employees, they will learn the rules and norms of the company more smoothly.
Source: Harvard Business Review