How to be a captain? Books are OK as a guide. Remember… people have their own personalities and styles and need to develop management and juggling skills. For me, experiences with, let’s say challenging individuals influenced me of how I don’t want to be.
Flying multi-crew, F/O’s legs, offered as an option by me, were treated as Pilot in Command Under Supervision (PICUS). Let them run the entire trip. They know how to fly an airplane… right? It’s the decision making skills and unforeseen challenges that arise, where the real learning comes into play.