[launchd-dev] launchd.plist & SMJobBless

Hi list, I have problems in removing calls to AuthorizationExecuteWithPrivileges. So far I played with both SMJobBless and ssd (simple socket daemon) sample codes and I am happy with them separately. I also played successfully with unix sockets but now time has come to put everything altogether. For ssd, we have to install in /Library/LaunchDaemons a custom plist containing definitions of a Socket that will be used to launch the daemon on demand. For SMJobBless, we seem to have no hand on the plist, except for the Label key. Every other key seems to be ignored by SMJobBless. The question is: what is the recipe to tell launchd to launch a daemon installed through SMJobBless ? Thanks in advance & regards J. Laurens