In Project Server 2013 documentation, the Operational Policies do not list Additional Server Settings.
https://technet.microsoft.com/en-us/library/gg186015.aspx
This TechNet article list Additional Server Settings being managed as a function of SharePoint Central Administration.
https://technet.microsoft.com/en-us/library/gg982980.aspx
In my current environment, I see Additional Server Settings being accessed both from PWA and SharePoint Central Admin. Do both places reflect the same information and if I change it in one place, will it update in the other? Should I be seeing Additional Server Settings as an option under Operational Policies from PWA?