[varefump]

One additional comment/observation/suggestion:
If an umpire indicates to the referee that a RED CARD is needed, it is best to have the umpire go to the referee and explain the rationale behind the request. Since the result of a Red Card is a point, the referee should be completely knowledgeable as to why a Penalty Point is awarded.
This is especially true when the umpire is rather novice or maybe new to the level of competition.
This is also one time when the 'R' does not need to back up the 'U'.
Many times the referee can briefly explain why he/she is not going to card a player/coach because of its negative impact on the match.
If the referee agrees that a Red Card is appropriate, then it will apear to the coaches and fans that it's a 'crew' decision, and not one based solely on the judgement of one official.