Yes, thats right.
If you want more than 1 oscillator you use more than 1 phacc/increment and add the MSBs together.
With a phase increment of zero the oscillator is silent.
That's it 
Yes, thats right.
If you want more than 1 oscillator you use more than 1 phacc/increment and add the MSBs together.
With a phase increment of zero the oscillator is silent.
That's it