Configuration workspace is the place to build your projects. It is used to hold files used during a build such as source files checked out from SCM, intermediate files generated during the build etc. In a grid environment, each node has a separate workspace for each configuration. By default, workspace for a particular configuration on a particular node points to the directory named by configuration path under QuickBuild's installation directory on that node.
For a particular configuraiton, the workspace directory is configurable through the configuration property workspace path. Once it is defined, it will be inherited by the descendent configurations if it is not overwritten. For the same configuration, you can define different workspace path on different node with the help of scripting and grid node user attribute.