I'll piggyback onto this. This is not only true in baseball, but it will be true in football and basketball as well. Watch an NFL or college game this fall, and you'll see at times, they'll beckon someone from the back of the team (the 3 guys you see behind the defensive backfield) or the lineman opposite side into a huddle because that person may be an expert on the rule they need clarification on. My HS football crew does this all the time. We even do it in basketball when we work 3-whistle, and sometimes there's a crazy situation that needs discussing. It depends on the infraction or the situation at hand, there'll be someone on the crew who knows the rule better and is consulted before any penalty (if any) is handed down.