[MenuItem("Tools/Якоря по углам %[")]
    static void AnchorsToCorners()
    {
        foreach (Transform transform in Selection.transforms)
        {
            RectTransform t = transform as RectTransform;
            RectTransform pt = Selection.activeTransform.parent as RectTransform;

            if (t == null || pt == null) return;

            Vector2 newAnchorsMin = new Vector2(t.anchorMin.x + t.offsetMin.x / pt.rect.width ,
                    t.anchorMin.y + t.offsetMin.y / pt.rect.height);
            Vector2 newAnchorsMax = new Vector2(t.anchorMax.x + t.offsetMax.x / pt.rect.width ,
                    t.anchorMax.y + t.offsetMax.y / pt.rect.height);

            t.anchorMin = newAnchorsMin;
            t.anchorMax = newAnchorsMax;
            t.offsetMin = t.offsetMax = new Vector2(0 , 0);
        }
    }

list.RemoveAt(list.Count-1);