Excerpt from http://scouting.org/Commissioners/Manuals.aspx
The new Administration of Commissioner Service manual will be available as a BSA Supply item in late March 2009. The online version is available for viewing now at http://www.scouting.org/filestore/pdf/34501.pdf . This manual has combined the previous editions of the Administration of Commissioner Service, Basic Commissioner Training, and Continuing Education of Commissioners. Some great additions have been made to the manual to support council-level commissioners and their support to districts, as well as some new sessions of commissioner training to be offered at all levels.
As this pdf file is 210 pages, this may be a manual to be purchased at your Council Service Center.