I won't be online at night anymore to organise the joining, so someone else from my coalition will need to do it.
The procedure is as follows:
1)Set a date to join together. As we have not heard from Alpha, I do not know when they will be joining us. So for now we wait.
2)Make sure the hero from Coalition alpha is online (he will post here).
3)Wait until there are faraway regions available with fewer players in them (or at least none with 30+ players in already).
4)Join a town, then post here what it is so coalition A. can follow.