Tvheadend

Hi,

I have a PC with a TVHeadend Backend and some XBMC clients.

1. How can I shutdown my TVHeadend Backend if no client is connected?
2. How can I start the TVHeadend Backend if a client want to use the TVHeadend Backend (I know WOL, but how?)?
3. How can I start the TVHeadend Backend if a planned/programmed recording should be done (+shutdown after recording)?

I have only found: https://tvheadend.org/boards/4/topics/4782?page=1

Is there a simpler solution?

Please help me. This is a cool project!

Thank you.