Through the years I have witnessed many unsuccessful management promotions and equally bad managerial hires. Often, the outcome would have been obvious if the employer had taken some time to ask a few basic questions during the screening process:
Hiring management talent is both a science and an art. Take your time to do it right. Engage in multiple conversations with the person. Ask a lot of questions. Have them meet with the people they will be managing and colleagues they will be working with. If they are moving into the role of supervising their peers, ask for feedback from their co-workers. Make sure your existing top managers spend some time with them. Check their references carefully. I also encourage you to have them take a personality profiling tool (e.g., MBTI, DISC, PI, etc.) and the Gallup Strengths Finder assessment. If you do the proper work upfront and practice deliberate discernment, your hit rate will improve dramatically. To scale a business, you need to not only have individuals who do their technical work well, but you also need individuals who can step up and lead groups of people doing technical, administrative, and sales work. The skills sets are different and often not transferable. Asking the right questions WILL yield better results.