This document gives Manpower Planning (MP) managers, and specialists responsible for implementing, administering or providing MP services detailed considerations on one main question: should staffing initiatives meet or exceed authorised staffing levels? It presents a shortage/surplus management models, including their advantages and disadvantages. It intends to encourage discussion and trigger thinking rather than establish guidelines as regards the desired models. However, some general policy principles in view of choosing a model are suggested together with operational ways and MP means to cope with a storage.