Lay out the day as a route of waypoints, each with a window and a kind: Fixed (committed there — only bookings at that location), Preferred (you'll drive to customers from there — en-route detours allowed), or Blocked (time off, no location). The engine reserves 15 min for the first document + 5 min per extra, plus traffic-aware driving time between stops. Gaps between waypoints are unavailable (no fallback). See the day plan to check feasibility and free time.