The relay module allows you to setup relays between two or more bots,
so members of different orgs and bots can chat with each other.
See https://github.com/Nadybot/Nadybot/wiki/Relaying-(from-5.2-onward)
for a detailed description on how to setup a relay and what the different
types are.
Use !quickrelay to find out how to set up a relay easily.