The Army uses Technical Publications, Field Manuals and other directives to provide guidance to its acquisition workforce.  As you stated, Class VII material is controlled by the Program of Record.

FM-440 (https://armypubs.army.mil/epubs/DR_pubs/DR_a/pdf/web/fm4_40.pdf)

and ATP 4-42 (https://armypubs.army.mil/epubs/DR_pubs/DR_a/pdf/web/atp4_42.pdf) provide the Army guidance for the procurement and control of Class VII material.