"the lights that you want to be always on, go into model edit and turn off the "Part of my Display".
Next , make a WHM. Now those channels are not included in the WHM.
Now effects put on the WHM will not touch the channels that you want your bars effect on.
i think i am only restating what has already been said.
Remember, when you press save we start with the leftmost column and render all those channels. then we go to the next column. The last column , therefore, has precedence over previous columns.if the same channels show up, last one rendered wins.