Bitcoin fork BTC and BCH
The potential fork in November does not affect the BCH-chain at all.
Since the new coin does not have a name yet, I will just call it BFC for now.

If you have 1 BTC now you will have 1 BTC and 1 BFC in November.
If you have 1 BCH now you will have 1 BCH and 0 BFC in November.
If you have 1 BTC and 1 BCH now you will have 1 BTC, 1 BCH and 1 BFC in November.

Nobody knows if the new BFC coin will stay like BCH or if nobody supports it (= nobody mines it, it's worth nothing, not listed in any exchanges, ...).