Coroutines

synchronous_coroutine.cs

    void Start()
    {
        Debug.Log(gameObject.name);
        StartCoroutine(Main());
    }

    private IEnumerator Main()
    {
        yield return StartCoroutine(One());
        Debug.Log("Grid Complete");

        yield return StartCoroutine(Two());
        Debug.Log("Locations List Complete");
    }
    
    private IEnumerator One()
    {
        yield return new WaitForSeconds(2f);
    }
    
    private IEnumerator Two()
    {
        yield return new WaitForSeconds(5f);
    }

Waiting.cs

StartCoroutine(WaitToExeute(1f));

public IEnumerator WaitToExecute(float secondsToWait)
{
    // The waiting
    Debug.Log("start wait " + Time.time);
    yield return new WaitForSeconds(secondsToWait);
    Debug.Log("end wait " + Time.time);

    // Code to execute
    isCharactersTurn = true;
}