If using a sequenser i don?t see the point in using keyzones. Just use another channel.
I tried going through the manual but i can?t seem to find any arp-sync-function. You could use a sequenser for the arps. Or play 2 arps sametime by layering them but that will of course restrict you too but create some new patterns

You could suggest an sync-to-arp-partern-quantize function to Access for a future OS update
