Outside garage lights
Without opening up the boxes and looking at how they are wired, it's impossible to answer with 100% accuracy.  However, even without seeing the wiring, I can say it's doubtful that the wiring for all the lights meets in a single junction box.  More likely, the lights are "daisy chained" together.

To do what you want, you're likely going to have to modify some of the wiring. This could include pulling new cable through walls/floors/ceilings. There's no way to know for sure what's involved, without actually seeing how the circuit is wired.