This is how you build multi mega farms

You can select on an individual telling them to go to an object ie mine vs selecting on a mine and telling people to come to it. This is how you can load extra above cap in something like a PD temple. That is not what is making it go quicker its the obilisk you have next to it thats making it go faster. The more oblisiks and the higher the people you have in that building the faster the return. I collect mine every 2 min.