Transparent method
Your workload divided by your calendar capacity.
Stage hoursModels × minutes per model, plus setup minutes for each whole batch.
Calendar capacityInclusive calendar days ÷ 7 × user-entered available hours per week.
Latest startThe target date minus the calendar days needed at the entered weekly capacity.
Limits
The planner assumes entered rates remain stable and spreads weekly capacity evenly. It does not know drying or curing requirements, health constraints, event rules, quality standards, proprietary army data, interruptions or dependencies beyond the stages you enter. Replace examples with observed values and keep a buffer outside the result.