What can he do to help his managers change their style?

To help his managers change their style, he can do the following:

1. Identify the specific areas of improvement: He should identify the aspects of their managerial style that need to be changed. This could include communication, decision-making, conflict resolution, or any other relevant areas.

2. Nurture open communication: Encourage open and honest communication with the managers. He can create an environment where they feel comfortable sharing their thoughts and concerns.

3. Share constructive feedback: Provide constructive feedback to the managers. Offer specific examples of situations where their style could be improved and suggest alternative approaches.

4. Offer training and development opportunities: Suggest relevant training programs, workshops, or seminars that focus on the specific areas in which they need improvement. This could be in the form of leadership courses, coaching sessions, or professional development programs.

5. Lead by example: As a leader, he can demonstrate the desired managerial style himself. By exhibiting effective communication, listening skills, and problem-solving abilities, he can serve as a role model for the managers.

6. Create incentives for change: Consider implementing incentives such as bonuses, promotions, or recognition programs to motivate the managers to adopt a new managerial style.

7. Provide ongoing support: Offer ongoing support and mentorship to the managers as they work to change their style. Be available to provide guidance, answer questions, and offer encouragement along the way.

Remember, change takes time, patience, and consistent effort. It's important to approach this process with empathy and understanding as managers navigate their own growth and development.