I've enjoyed using CAMBAM for quite some time now.
I have a few operations where I do not want coolant to run. I normally open the .nc in an editor and remove the M8 commands after the tool change or beginning of operation as necessary.
Is there a way to assign coolant OFF to a specific CAM style? I've looked around - but am older and blinder than I used to be.
You could do this by modifying the Post Processor. You will get a more detailed answer if you ask your question on the CamBam forum. Great (and very quick) support there for about any challenge you may come up with using CamBam.