When you change roles from Developer-to-Manager, it's vital to proactively listen and learn, in order to gain an understanding of your new position as soon as possible. Management meetings are a great forum for you to gain insight into your new management role. Start building a healthy relationship with your peers and fellow managers. A relationship is about more than just simple transactions. So, try to have meaningful conversations focusing on feedback and ideas where possible and appropriate, over simple exchanges of tasks and information.
Be aware of how openly they're likely to share their challenges with you, then request or perhaps enlist your help. Always remember that collective problem solving is at the heart of good management. So, collaborate where possible, but also remember that you have your own priorities to take care of.
No matter which methodology...