Controlling projects to build in an RTC build...

When doing a build in RTC, I am able to download based on the components I want to build from a repository workspace.

How do I further control the projects within a component in the repository workspace that I want to build?

Thanks.

What we do is to define a set of build definitions that use different component load rule files (see http://publib.boulder.ibm.com/infocenter/rtc/v2r0m0/topic/com.ibm.team.build.doc/topics/r_scm_build_loadrules.html) to only load a subset of the artifacts of a component.
After that, it's up to your build script to handle this, e.g. only build the projects that have actually been loaded.
regards
Florian