Fairly straightforward question: In the LDS Church, who decides where to place new Churches, and how? Are there specific criteria? Is there a process for determining whether a Church can be supported?
I'd imagine that the process has something to do with how many believers there are in a community. I know that witnesses go out everywhere, and in my experience, I attended LDS services in a high school gym, and there was talk about a "real Church" being established, but I never really thought about it in detail, so I didn't ask. I'd guess that there's a criterion for how many believers are in an area to make it worthwhile to place the building there. (After all, people can be taught just fine in a high-school Gym. A building seems to be a convenience rather than a need.)
What is the actual process, and if there are criteria, what are they?