The "high-level intervention to help talk about the order" in the gym means that the leaders or professional negotiators of the gym will communicate with customers and facilitate the transaction. "Rotation" means that customers need to wait in line to communicate with coaches. "Member referral" means that members introduce friends or family members to join the gym to become new members. "Attracting visitors" means attracting new customers to visit through marketing activities. "Visiting by appointment" means that customers make an appointment in advance and visit the gym regularly.