For supporting process interconnection, on top of an existing open-source Business Process Management (BPM) environment oriented to Web Services (modeling module and execution engine, BPEL - Business Process Execution Language - compatible), this paper will propose a support to task-oriented, interactive decisional activities to be performed by CNO (Collaborative Networked Organizations) Actors. At the current status of achievements no standards neither existing solutions are able to provide such feature. These set-vices aim at providing an innovative modeling and execution environments able to manage complex and compound services made of automatic and manual activities.