Actually, the setup is by OSM and other 3rd parties (open source) software. It changes rapidly, so we can't keep up with it.
The last website I knew about with the latest setup information was https://switch2osm.org/.
After you get your OSM Server set up, the you are able to change VA to point to it. That info is is the VA documentation. If you cannot find it, post again.
... View more