They Say

Snatch from lap position5 singles at 75% with 30 sec rest between reps Rest two minutes 5 singles at 80% with 30 sec rest between reps Rest two minutes 5 singles at 85% with 30 sec rest between reps Rest two minutes

After 85% add weight progressively, resting as needed between each single. Once you miss you're done. That means you could work up to 100% theoretically (though unlikely).