Using graph transformation as the semantical model for software process execution in the APSEE environment Software Process Technology recently evolved to automate software process management by providing specialized languages and environments to control the human performance in software development activities. This paper presents APSEE as an executable visual language for software process modeling. The underlying meta-model was specified using graph grammars, which successfully derived a Java-based implementation. Finally, this experience is discussed with respect to the provided management mechanism to handle dynamic changes in executing processes.