Just like you, the members of your team are also very new to the team and project itself. Many may be worried or unfamiliar with such situations and want nothing more than a friendly smile to show that you are there to help and support them. Providing support is different for different circumstances: sometimes, people may need specific job-based help and support in their role, sometimes it may be emotional support and sometimes, just someone to listen. You are a team after all, supporting each other is the key for that team to thrive and the work environment to be a positive one.