How do field events work: trials, the 60 second rule, warm-ups and bar increments?

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Trials: in throws, long jump and triple jump, the best eight competitors after three rounds are eligible for a further three trials. When there are eight or fewer competitors in an age group, all are eligible for six trials. Order is reversed by ranking for the final three trials, with no further reordering for the final round. Late arrivals: no competitor may enter the competition after the fourth round begins. A competitor who leaves during an event may compete out of turn for that round. Warm-up: all athletes are entitled to a minimum of two official warm-up trials in competition order. 60 second rule: for all throws and horizontal jumps, once called the competitor has 60 seconds to start the attempt. At 15 seconds a yellow flag is raised to show how much time is left, and running out of time is a no throw or jump. The clock does not start until the competitor has their preferred implement. High jump and pole vault: the bar normally rises by 3cm in high jump and 5cm in pole vault, unless all competitors agree to a higher figure. When one competitor is left in an age group, that athlete decides the height, while other age groups continue the normal progression. Masters competitors may touch the landing area before clearing the bar but may not use it to any advantage. Hammer and weight throws: the throwing motion must be done with two hands on the handle, and one-handed release is not allowed. Personal equipment: must be submitted to the Technical Officer for inspection between two and three hours before the event (the previous day if the event starts before 10am), and must be available to all competitors.