BPM newbie configuration question

Hi,

I have modelled a simple process using the BPM modeller. The process is using abstract interfaces for receiving and sending information. Now I would like to configure the process. I have successfuly managed to import the process into the configuration builder. I don't want to use an integration scenario. Could anybody explain me how to map my abstract interfaces to concrete communication channels, since the interfaces don't appear in sender/receiver configuration?

Thank you and kind regards,

Heiko