A long read, but worth reading if you are in this domain: http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx.
Manage Food Service Staff. Food and beverage managers are often responsible for recruiting, hiring, training, evaluating and terminating food service staff members. Personnel management of restaurant staff requires experience as well as interpersonal skills.
Dietary managers oversee the operations of food service establishments like restaurants, school cafeterias and long-term care facilities. Although certification in this field is not required by the government, those who earn the Certified Dietary Manager (CDM) credential can improve their job prospects in the field. CDMs have a wide range of duties, including food safety assurance, purchasing, employee supervision and food preparation.