The instrument is simple once you know the grammar. Each dot is a person, placed by their score. The line is what the mission demands. The band past the line is the zone that meets it.
From that, every dimension lands in one of five states. Gap, nobody clears the line and the team is exposed, shown with how far short. Near miss, no one quite clears it but the best person is close. Single cover, exactly one person clears it, so the work gets done but it is fragile. Covered, two clear it, healthy with a backup. Overlap, three or more clear it, so real strength is sitting idle.
At the person level, each individual is read against the demand with a verdict from comfortable to overstretched, plus how much of their strength is used and how much load they carry.
At the team level you get coverage, fit, balance, the two signature numbers, and a single readiness verdict. Thirty seconds of looking tells you where to act.