Our business office manager signed an interim request for additional funds (FS-25) but it was returned with a note asking for an authorized signature. Who is authorized to sign?

The person authorized to sign the certification statement on budgets (FS-10), final expenditure reports (FS-10-F), amendments (FS-10-A) and requests for additional funds (FS-25) is the Chief Administrative Officer of the agency or a properly authorized designee.