Which whole manpower method accounts for positions that need to be maintained without continuous productivity?

The directed requirements method is focused on identifying and assigning the necessary resources to meet specific operational demands without requiring continuous productivity. This approach takes into account the need to maintain certain positions or roles that may not have a constant workload but are essential for overall functionality. These positions are crucial for tasks that can't be performed continuously but still require coverage, such as management roles, maintenance, or supervisory positions that ensure smooth operations.

In contrast, minimum required staffing typically refers to the least number of staff needed to manage ongoing productivity effectively. The three-shift system and continuous flow concepts are more aligned with ensuring steady and uninterrupted productivity, focusing on maximizing output rather than on roles that may intermittently be necessary. Therefore, directed requirements stands out as the method that acknowledges the importance of maintaining specific positions regardless of their immediate productivity demands.