The installation instructions are clear how to download a .zip for an individual product (e.g. ESB, Application Server, Mashup Server). But based on the OSGi component architecture, I thought it would be possible to, for example, add Mashup Server functionality to an existing install of the ESB. I've looked at the Feature Manager, and tried adding a repository (http://dist.wso2.org/p2/carbon/releases/3.2.4/), but have not had success.
Any guidance appreciated.