How to set up Pale Moon Sync on multiple devices

[Moonchild]

Pairing devices/installations of Pale Moon Sync may not be the most intuitive process without some advance knowledge of how the process works.
To make things a little easier, there is a help page over at http://www.palemoon.org/sync/help/easy-setup.shtml

This page outlines the setup procedure when you have access to both installations (so-called easy setup, which uses a 12-character code), as well as the procedure you need to follow when you are not near a synced computer (you need to have written down your recovery key in that case).