You are a manager working for Smith Co. Ltd. a multinational corporationdealing exclusively with sanitizer manufacturing with 20 branches around the world. Explain the various functions you perform and roles you need to play as a manager. (apply Fayol's, Mintzberg's and Stewarts concept while mentioning the functions and roles). Also explain any three challenges with examples you have faced during this pandemic and the contemporary management theories adopted to mitigate this issue.