You can turn off the annotations for fixtures in the fixture properties, although it looks like you have to do each fixture individually. Then just leave annotations on for just one of the pars.
I'm not sure of a good way to get them to show as a bar of ACL's in a Symbol key, you can manually set the text to what you want, but getting the correct cymbol might not be so easy. You Could add some dummy fixutres, put them out of the way of your plots, give them a symbol (e.g. LEDJ event spot bar WW) and a manual name, then turn off the Par 64 from the symbol key.