Thank you for your question. There really is no "normal" for coach calling pitches. It is the coach's preference. I have seen it at all levels. In the older leagues, it may be a case where the coach turns that back over to the catcher. In may be in the younger leagues, where a coach may not call the pitches because the pitcher only has one pitch (although the coach may call location in that case). At the end of the day, it is up to the coach to decide whether he/she wants to call the pitches.