Answer: When they are at the salon.
Explanation: Due to Peter's behavior and the effect it has on the reputation and and growth of the salon, Allie being the Salon manage should call peter to order in other to address pressing issues regarding his personal life and it's effect on the business. The best time for Allie to approach Peter would be when they are at the salon. This is so because, the discussion is about how Peter's personal life might be infringing on his work and business and as such business or work related issues should be discussed at work, which is the salon. Also, in other to point out Peter's lapses or misdeeds, Allie should approach Peter at a time when he his at the salon and appears in his usual rough appearance after hanging out, in other to have a valid proof.