I have created a home group for 2 lights connected via ZB Mini-L switches. If I turn on or of the group all the lights in the group turn on or off.
If I turn on or off either of the lights individually then the other light in the group does not change.
How do I configure this so when I turn on a light in the group all the lights match that change?
You should see the group (light group in this case) as a third entity that controls the two light entities. If you want a light to go on or off when you switch another light on or off you would have to create an automation that triggers on either of the two states.