"Never make anyone a people manager without making them a mentor for a new hire on your team first," says Bharath Jayaraman, vice president of people at financial technology firm, Paxos, and a former HR executive at Facebook and Amazon. "Set very clear expectations that, as a mentor, [their] role is to help them navigate the company effectively and help them understand where they're blocked."
Another idea is to gather groups of employees who have said they want to be managers and put them through formal training. "When people go through that and then say, 'Hey, this is not what I thought I would do as a manager; I'm not sure that's for me.' that is a great outcome," Jayaraman said.