When wearing any hat to think and to implement corporate duties and therefore the hats to show roles, it is a process with a specific intention in mind and exercise.The duties of a person.
When wearing the hat I had to think and perform the duties of a hat, so to play a role, it is a process with a specific purpose in the conception and execution of one's duties.
When wearing a hat which one would have thought and practice in the task. Therefore, wearing a hat to play a role in the process that is used in specific thinking and practice function of one person.