Do you have the schematic yet? If not, get it...it'll be crucial to any discussion of patch points.
If you want to affect the pitch of the 6 voices individually, you have two choices. The easiest is that ou'd the 6 pitch CVs that go to the individual voice circuits. These signals come after the single exponential converter, which means that they are V/Hz.
Also, regarding CV for pitch, be aware that the main portion of the Polysix uses a scaling of 0.5 V / octave instead of the more typical 1.0 V / octave. This exponentially-scaled CV is used internally for master pitch control of all 6 voices together.
If you want to affect the pitch of the 6 voices individually, you have two choices. The easiest is that ou'd the 6 pitch CVs that go to the individual voice circuits. These signals come after the single exponential converter, which means that they are V/Hz.
Which you choose to do depends upon what you want to do.
Chip