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.
Job Description and Duties. As a dietary manager, you'll normally work under the direction of a dietician or nutritionist. Your job will combine elements of basic nutritional therapy with administrative/operational duties common in foodservice management.