How to allow Byzantine faction to build and recruit order guilds and units

[Basil2nd]

Whilst far from historically accurate I was wondering how I would go about giving the Byzantine faction access to the Holy order guilds and units e.g. knights Templar. I would really appreciate it if someone could tell me how I would go about doing this.

[attyla]

As usually. Add byzantium to factions line in EDB
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http://www.twcenter.net/forums/showthread.php?t=259736