Oscillator sync, fixed notes

I have this book that shows how to make synth patches and the settings needs to make them sound like said instrument. My questions are 1, In Halion 6, is there a way to sync and unsync oscillators. I would also like to know if fixed note option is possible with the oscillators. I see that option if there is a sample zone but not on the synth zone. If not, for example, if i have a situation where I’m using two oscillators and I need the 2nd to play as fixed notes, how would I be able to make this happen?