Problems encountered in simultaneous emission of dual head lasers

I am only using one tube and I have a button to activate each power supply so I have never thought about this. I don't see anything in lightburn either.
I would guess that choosing between the laser tubes would be a machine function?

I have never operated a twin laser machine - - but in RDWORKS in the layers screen there is an option to power #1 and or #2.
I presume each tube is a different power and depending on the desired output one tube is preferred over the other.