Hi All What I am trying to work out is how to use one switch to turn on & off 2 different group addresses say Study 1 Lts and Study 2 Lts. I have set this up in the Relay output of the logic using (or). I would also like to have on a different switch 2 gang one switch to turn on & off Study 1 Lts and the other turn on & off study 2 Lts. I have managed to work out the above but my problem is if I turn the lights on using the one switch that turns both study lights on I am unable to turn off lights using the 2 gang switch. :confused::confused::confused: Thanks in advance inpowers