Sorry for not being more detailed.
I have four models. Roof 1, Roof 2, Roof 3, and Roof 4. If I drop an effect onto any of those 4 models I see no effect. I also have a Group named Roof which contains those 4 same models. If I drop an effect on those I do see the effect on Roof 1 through 4. I am not drilling down in the Group named Roof and trying to put the effects there on the specific models (although I tried that and it did not work).
One correction. I originally thought the problem was with all of the incandescent lights. But it is only the 4 roof models.
I am sure I have set something up incorrectly. I am currently looking at my network settings. The roof models happen to be the very first channels.