You can change the default jBPM installation by means of the Eclipse preference mechanism. Open the Preferences dialog by selecting Window > Preferences and select the JBoss jBPM > Runtime Location category. Using this page you can add multiple jBPM installation locations and change the default one. The default installation is used for the classpath settings when creating a new Process Project. Changing the preferences has no influence on already created projects. Getting rid of a jBPM installation that's being referenced by a project however will cause the classpath to contain errors.

Figure 6.1. The jBPM Preferences Page

You can add tasks to task nodes and then configure these last ones in a similar manner as the Action configuration mechanism. The context menu of the tasks contains a Properties entry that opens a configuration dialog.

Figure 6.2.  The Task Configuration Dialog