Day to day from my experience: - When there are blockers, especially with other teams. e.g. priorities mismatch - Task assignments, priorities - The project

Day to day from my experience: - When there are blockers, especially with other teams. e.g. priorities mismatch - Task assignments, priorities - The project management side of things I've worked in teams where the "manager" had several teams. But in those situations each team had 1 or 2 that were leads, either officially or not. But they worked with the rest of the team and were basically managers except for the people management responsibilities (performance reviews, hiring, firing etc).