Final answer:
A member's extension should be authorized only if it does not result in overstaffing within the Member-Employment Status (MES) area, as this ensures operational effectiveness and proper resource management.
Step-by-step explanation:
A member's extension request should be authorized by the current command only if continued manning on-station will not cause an excess of filled billets within the Member-Employment Status (MES) area. This suggests that while the command has authority to approve extensions, they must ensure that such extensions do not lead to overstaffing, which could result in inefficiencies or budgetary concerns. It is important for command to carefully evaluate the needs and manning levels before authorizing a member's extension to maintain optimal operational effectiveness.