The chief judge must be able to spot a rule not in effect. The chief judge should always read the rules before a meet. The chief judge should stay out of the way and should not chat with the starter or referee. He should never cluster. He should be close enough to help but not butt in or take over.
Many meets utilize head phone sets to communicate.
When a hand is raised, the chief judge should announce that there is a possible disqualification and the location. He should then go to the official and ask the three questions. He can then announce the disqualification to the referee. The referee will ask the chief judge the same questions asked of the official making the call. The disqualification is then accepted.