It's usually easiest to just do it at the workspace level, where

dendron.yml

is. This will include all your settings, and all local vaults. This is the easiest if you want to just sync everything between multiple computers or something. If you are using multiple vaults and just want to share a single vault, or you have specific needs like syncing some vaults and not others, you might want to do it in your vault. You can use the "Vault Convert" command to do it for you.