This skill is relevant not only for individuals in positions of management with formal power, but also for individuals working with peers in teams.
At the earliest stages, the focus is on basic empathy - understanding their own feelings, being able to share them, and recognising the feelings of others. The focus is on managing - dividing up tasks, managing time and sharing resources, managing group discussions and dealing with disagreements.
Beyond that, individuals build their awareness of their own strengths and weaknesses, and those of their teams. This allows them to allocate tasks effectively. They then build techniques to mentor, coach and motivate others. At the highest steps, individuals will be able to reflect on their own leadership style and understand its effect on others.
Ultimately, they should be able to build on their strengths and mitigate their weaknesses, and adapt their leadership style to the situation.