Getting a New Team Member On Board

You recently hired a new employee, Sarah, from a different area of your company. The transition is difficult because Sarah will work part-time for you while she phases out of her other job. The other members of your team have never met or worked with Sarah before. As a leader, why should you be concerned about onboarding? What can you do to more effectively integrate a new member into the team?

What are the obstacles of this case situation? Give 5 obstacles and explanation