It's very hard to provide good Qmaster functionality because the hooks to do so are just not there.
The nodes option lets you split up a render into multiple qmaster submissions. If you have 100 frames to render and 5 in the nodes field, then 5 jobs get submitted with 20 frames each. Unfortunately QT transcodes can't be split up because the quicktimes are rendered in one pass. It's possible to it like compressor does but we're not there yet.
Qmaster should be possible from Automator actions.