Oh everybody in the world has a friend "in the business" or thinks they know it all. Unless it's specifically stated in your lease or whatever state you're in has a laws specific to this, then it's up to you or whoever makes these decisions in your company. You could also tell her OK, well maybe I'm missing something and your friend could reference the civil code on this issue -- because it's been my experience that this type of comment comes from someone who's been with one company and believes that because their company does it that way then that's how it's done everywhere.