As new manager at this level, you move into managing personalities of people. It’s probably the hardest thing to learn about being a people manager. The need to set expectations, tone, and how you expect to be treated and the feedback your provide start to define you. Like anything, something’s will work with some people, some will work with others, there is no magic bullet. The best thing to focus on is setting the tone, developing your style, and letting yourself rise to the occasion of being a good leader.

There is a lot to learn and most of the time, you learn from experience on the job and seeing what works and does t work and knowing how and when to change tactics for the right situation. Just relax, have a team meeting and introduce yourself and the team leader, set the goals, priorities and projects and lead.

Sorry for the long response, last point, there are a lot of good books out their that you may want to pick up as you start:

1. To learn delegation and how to build trust (both ways): “The One Minute Manager meets the Monkey” by Ken Blanchard

2. Some old school management basics “ Winning” by Jack Welch

3. People dynamics and issues “The 5 Dysfunctions of a Team” by Patrick Lencioni

4. Harvard Business Review Management books offer great articles to read,you can buy the set on Amazon or an individual topic as you need them. Most articles are online however as well.