How to assosiate scene to group?

Is it possible to initiate scene by pressing button on wall switch?

  1. I’ve tried to create scene there event is switching OFF one of the appliance.
    Command - switch off another appliance.
    Scene is only working if I press OFF from Vera but not working id i press switch button physically

  2. if for example i have more than one group for the wall switch.
    1st group is manipulating a line attached
    How to initiate a scene 1 by group 2 and scene 2 by group 3?