please write a scientific article showing your analytical and cognitive abilities in the field of human resource management, supporting your answer with examples whenever needed within the following axes:

• Explain the link and the importance of employment Planning and Forecasting in recruiting process.
• Discuss in your own way the differences between between internal and external candidates and the advantage and disadvantage of each method (6) with an example.

The relationship between employees testing, employee selection, interview and training with an example