Never done this, or know much about them. But, the puffball itself is just the visible fruiting part of the plant, and it seems that there might be some point in transferring a quantity of soil from a place where they have been growing. This might carry the threads of the fungus, so it might grow where you want it. Or maybe get one that is ripe and ready to burst the powdery spores, and make sure that the spores go into the area where you want them to grow. They live on dead organic matter, so you need to make sure your soil is rich with this. I think I've heard that puffballs have been used to help trees establish when newly planted, and they take a ripe puffball, before it goes powdery, cut it into slices, dry it and mix it into the planting soil, where it establishes and provides some benefit to the tree. Maybe someone here is an expert on this, it would be interesting to know :)
