MA.1:4.3 - Keep resource quantities and supplied capacity distinct

A rig-hour, a qualified staff-hour and an elapsed hour measure different things. Recover what each resource must actually provide. Check that an estimate of machine occupation has not silently become an estimate of staff attendance.

Group resources only while the grouping preserves relevant capability, consumption and money. Two machines can share a pool if their interchangeable capability and behavior suffice for this use. A specialist machine that alone performs a required test needs its own boundary. Likewise, splitting identical consumables by invoice number may add detail without improving the answer.

Compare demand with the supplied capacity conditions for the required time window. Retain commitments to other work, unavailable time and protected reserve. Keep thresholds such as an additional shift, license tier, supplier block or specialist booking visible. Obtain an adequate operating result when feasibility, the constraint or the schedule is unresolved; the cost model uses that result rather than establishing a feasible schedule from a total number of hours. MA.2 deepens the account when the meaning or cost of capacity itself needs explanation.