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.
Very often restaurant managers are owners of the business as well, which means they will closely work with the chef, selecting recipes and compiling menus. Being the owner will also require a restaurant manager to be good at planning and balancing the budget, checking that everything is in order and that the accounts balance.