You should find information about remote management service in the QlikView Server Reference manual. It's not that complicated to figure out once you try it (famous last words, I suppose). Look in the QMC in the services tree for the "Remote Management Service" option.
Once up and running, you can copy tasks between instances in QMC. Documents (and folder mount structures) needs to be manually copied though.
Well, since the directories in QlikView Server and Publisher, like User Document folder, Source Document folder or QVS root/mounts are all relative paths, as long as they are identical from the root and below, it should be just fine.