Final answer:
The question seems to be about signing authority for reports within a ranked structure, possibly in a military context, but the provided information relates to the civil service General Schedule system and does not adequately answer the question.
Step-by-step explanation:
The question pertains to the authorization of signing performance evaluations or reports for military personnel, specifically in the ranks of E1 to E9. While the General Schedule (GS) is mentioned in the provided information, it appears to be a matter related to military ranking, not civil service. However, the question may have been asked in the context of a similar hierarchical or grading system within the military, where higher-ranked personnel have the authority to sign off on the evaluations of those below them.
In the context of the United States military, reports for E1-E9 personnel would not be signed by other enlisted personnel, but rather by officers or those of equivalent civilian grades.
If the question is indeed about the military protocol, it has been misunderstood as related to the civil service grading system. Without clear military ranking guidelines included in the provided information, it would be incorrect to provide an answer based on the General Schedule system used by U.S. civil service.