43XG8305BU - Turning sky off with Sony remote control

[KerryS03]

Hi,   Just purchased new Sony TV (the old tv was 12+ years so the technology has changed a bit).  I have sky going through the HDMI cable and we can receive a picture on the tv etc.  You can change channels using the sony remote, however I can only turn the sky box off with the sky remote.  Is there a way to set up the Sony remote to turn sky on/off when the Sony tv is turned on/off with the green button? 

[rooobb]

I do not know how you can change channel on sky via the tv remote (btw which sky decoder do you have? mine is a fiber sky q). but switching it off is not supported by the decoder, it is possible the other way round (switching the TV off via skyq remote by holding the power off button for few second)