Starting from this version, MSI Package Builder produce MSI packages, which can install Windows services. This feature allows to create customs MSI packages for original installations, which include steps to install services.
At the current moment services support works in automatic mode only. It means that during monitoring and decompilation services installation actions are detected and correspondent information is stored in the MSI Package Builder project and later used for generation of MSI package. In the current version information about services isn't exposed in UI and there are no actions for manual services management. These features will appear soon in upcoming releases.