Employees who get the opportunity for continuous development are twice as likely to spend their careers in the company that made it possible for them (Gallup)
Recommendations
Meet the people you work with. Make an effort to find out what motivates them, what they are good at, and what else they need to develop. Be part of the team you lead.
Quick win ideas for an action plan:
In addition to regular tasks, arrange development tasks that are outside the comfort zone of employees.
Strategic initiative ideas:
Establish a system for tracking and recognizing and managing talent.