Managers have the responsibility to take actions that make it possible for people to do their best and achieve group goals. Individuals usually have their own personal goals they pursue while working in a group. Managers must take note of these individual goals and lead the team in such a way that individuals can meet their own personal goals. That way, individuals will be more willing and enthusiastic to contribute towards the achievement of group goals.
My retired father wrote a training manual for managers many years ago. He worked in HR for most of his adult life. The company he wrote the manual for no longer exists and my dad gave me permission to use his manual in my posts. I had to translate, break down and make it less formal so that it is suitable for a blog. I hope the essence is still the same.