If you run the QT on another computer, you must export your wallet to that computer so the pool knows who you are
It doesn't matter which wallet is on the mining computers if they are pool mining. Identification is only done through the workerid afaik.
Maybe I'm incorrect but unless you make a different user log in and associate it with a different wallet, how would the mining software know that my laptop01 is not your laptop01?
You can have multiple workers under the same user name on the pool if you have the same wallet, but I don't see how else it would be possible as the config file has no reference to your wallet id.