General Manager's Office: General Manager's Human Resources Department: HR Finance Department: A/C Catering Department: F&; B Housekeeping Department: HSKP Engineering Department: ENG Security Department: SEC Recreation Department: ENT Front Office Department: FO Sales Department: S&; MAM Lobby Assistant Manager GSM Customer Service Manager RM Duty Manager GRO is the Director of Customer Service Relations, specializing in the relationship between customers and the company. RM- Resident Manager GSM- Guest Service Manager DOS = Sales Director osm = Sales Director &; MarketingADOS= Assit。 Sales director, assistant general manager. Communication manager, this is only part of it!