Job Description
Ask the employee who is performing those tasks:
If you have not defined tasks in your organization, ask your employees to do all of their work during a working week in a small, separate manner. This is one of the most appropriate ways to check the وطایف description of a job.
Ask the top manager or the relevant authority:
You can ask for the direct responsibility of your job, whether the person has duties on his working day and what needs to be done, a number of questions that usually top managers better than anyone.
You can get help from the prepared forms and the interview method.