A step by step hording tutorial for no0b dummies

[Mouzafphaerre]

.
I've found Bernhard of Clairvaux's How to make a faction horde and how to make your own unique horde but it's apparently for roxorz11101 modders and I don't understand a bit of what to do. It's been ages since I tried any modding/remodding with RTW so I'll be grateful if one of you gifted ones described how to make a faction horde, making some of its units horde units and adjusting their upkeep step by step, which files to edit, what to copy where etc.

What lies specifically in my mind is remodding EB for BI giving Sauromatae, Saka Rauka and Pahlava modding capabilities and making their lowest end factional levy units horde units, decreasing their upkeep. (That said, if horde units get 0 upkeep only in horde status, it won't be necessary.) No new units are possible; all slots are occupied.
.