LeanTween appear element code example
Example: leantween move ui
LeanTween.move(gameObject.GetComponent<RectTransform>(), new Vector3(200f,-100f,0f), 1f).setDelay(1f);
LeanTween.move(gameObject.GetComponent<RectTransform>(), new Vector3(200f,-100f,0f), 1f).setDelay(1f);