Preventing a CheckBox on the top of a GroupBox to be a child control?

I want to set the location of a CheckBox on the top of GroupBox like in this picture to enable/ disable the groupBox:

but in this position, the checkBox is contained within the GroupBox child controls, so it is disabled once I disable the GroupBox..

So Is there a way to keep it in this location , but excluding it from the groupBox controls? I tried, Bring to front, but doesn't help!