Each R&D person is placed in one category by days of use in the calendar month: Regular ≥ 17 days, Occasional 5–16, Trying 1–4, Never used 0. With All, the best assistant counts (20 days on Copilot and 3 on Claude is Regular). Regular matches Engaged and Regular + Occasional matches Active (monthly view); “% weekly users” = Regular + Occasional. People: active R&D employees with AI usage enabled (service accounts excluded), so totals may differ slightly from the KPIs above. Groups with fewer than 5 people, or with everyone in the same category, are pooled into “Others” (dropped if still too small or uniform); All R&D covers the rows shown. Monthly only: in Week view it shows the month of the selected week.