If a member changes group for more than three weeks, when shall it be reported?

The correct choice reflects the designated timeline for reporting a member's change in group status. In this case, if a member has changed groups for more than three weeks, the procedure highlights that such changes should be reported by the 18th of the month. This timeline is likely established to ensure that any shifts in personnel assignments are documented and managed appropriately within the organization's administrative framework, allowing for necessary adjustments to be made in planning, staffing, and resource allocation.

This particular timeframe allows supervisors and administrators to react to changes effectively and process any implications such changes may have on operations or personnel assignments. Given that other options suggest different dates, they would not align with the stipulated protocol for timely reporting in this specific context. It's crucial to adhere to these deadlines to maintain organizational efficiency and communication regarding personnel status.