Sonar Runner shows up in Plugins List but not under Project Settings and runner combo

hi there,

I followed TeamCity's documentation to have uploaded SonarQube plugin to our TeamCity server. I can see "Sonnar runner" in the Plugins List under Administration. According to the documentation: "SonarQube Servers connections are managed in the SonarQube Servers page of the Project Settings". But I don't see "SonarQube Server" page under Project Settings as well as in the runners combo box though.

We are using TeamCity Enterprise 8.1.5 (build 30240)

Please help!

Dong