Moving packages between volumes

Synology doesn't currently have any official tools for migrating packages between volumes so you have to do it yourself if required. Most packages are pretty intelligent and allows you to uninstall without removing the actual data, so you can simply uninstall the package, select NOT to remove the data and then install the package again on your desired volume. But a few packages requires more work. However, follow my guidelines on your own risk.
MariaDB - before moving, open the package and click the button to move your database to your new volume. When that's done, uninstall MariaDB and install it again to your new volume (same that you put your databases).
BTSync - Cannot be moved properly without loosing settings. Be sure to write down all your keys/settings before moving.
Plex - Seems pretty intelligent. You can move your movie-directories to other volumes without Plex going nuts.
Webstation - All webstation settings are lost during uninstall so be sure to writedown all your virtual hosts etc before doing this.