any config needed to setup multiple machines mining under the same address in p2pool? if not, any tips on how to optimize their shared effort ?

like the title says, recently got 3 pcs to mine and was wondering if just putting the same --wallet argument when running p2pool was enough to properly join them. even if that were the case, i bet there are a ton of tricks to better optimize such a setup. feel free to share if you know any, thanks.