recipe for setting up new schemas

[arjunsavel]

https://docs.google.com/document/d/15DgMfqmaJxXbKZ74ayFW4ij_tLIySTWQfhHidyFUvSo/edit?usp=sharing

[kelle]

A lot of this is already in the docs, but some of it could use copying and pasting.