Upon my 2nd job advancement, I accidentally put a point in a spell that's for my 1st job. I then bought an SP reset (1st job) and realized I couldn't put it in my 2nd job's tree. If any GM could help me with that, I would be grateful for the one SP. My IGN is Naomy.
It's not possible, sorry. Every class has skills that are useless after 2nd job, so that 1 SP in 2nd job won't mean much in the long run.