When setting up CleverTap for your mobile app or website, which steps are essential to leverage its full potential for user engagement and retention?
    - Step I: Integrating CleverTap SDK into your project for tracking user interactions.
    - Step II: Manually coding each campaign within your app's source code.
    - Step III: Configuring user segments based on behavior and engagement.
    - Step IV: Analyzing campaign performance to refine engagement strategies.
Select the correct combination of steps.