Yes, it is for that purpose. In order to make a farm, you have to make a directory where all the "animals" (the other wikis) are to be stored. That directory can not be within the directory where your main wiki is stored. That's what the error message in your first post says. Hence, you have to prepare a directory which is not within the directory of your wiki. When your main wiki is in japhinuma/public_html, then your farm could perhaps be in japhinuma/farm.