If you are a coach, you need at least 2-3 coaches. You have to be prepared for a good business. Of course, if business is not good, you can add another coach. The premise is that you and your coach must have a certain level, otherwise members and the market will mercilessly abandon you and your library! If you want to keep people, it depends on the salary you can afford. Not only need communication, front desk, salesman, etc. A yoga studio should be run by 10 people.