To raise others up, and provide an environment where they can do their jobs effectively. Occasionally, to perform coordination tasks, such as deciding on overall strategy, or resolving disputes; more often, a leader delegates but is otherwise hands-off, since most well-functioning teams are largely autonomous. (This is, of course, from the subordinates' perspective: from the leader's perspective, it might look like a lot of putting out fires all of the time.) A leader's job is rarely to self-promote.