The function of managers in business is for leadership, direction, help, and specialization. There are many different functions a manager will take on, but typically they will engage in the same work alongside their employees.
A manager is there to guide and lead their employees and ensure they’re on task. By providing leadership, managers ensure that company goals are met and that employees are successful, which in turn helps the business. They offer counseling and advice to improve performance and establish long term goals.
Managers also contribute discipline as needed. There are, unfortunately, occasions when employees need to be let go or reprimanded for poor performance.
Finally, managers are in place for specialization and delegation. They can focus on particularly difficult projects and also know the skill sets of those around them so they can distribute projects and work to where it would get accomplished the most efficiently.