Charisma says "Put this card on a ready vampire. This vampire's recruit ally 
actions cost 1 less blood or pool (but never less than 0 blood or pool)."
If Zhenga has Charisma, and goes to recruit, say, 3 Bimas at once (X=2), 
does she pay 2 for X plus 2 for the additional 2 Bimas?  Or does the 
Charisma discount apply to all three of the recruitments?  I'm guessing the 
latter, since the additional allies aren't being recruited as a "recruit 
ally action", even though they are being recruited *during* a recruit ally 
action.  Right?
Josh
needs more allies
If by "the latter" you mean "the former", as your explanation
indicates, yes.
2 for X, the "as an action" Bima for free, and the 2 bonus Bimas at 1
each, for a total of 4 blood expended.
In that same situation, which is the correct way to replace cards after
Zengha's power is activated :
- replace both additional Bimas, then move up to X disciplines from
hand, then replace those disciplines ?
- replace both additional Bimas, then move and replace up to 1
discipline per Bima one after the other (possibly drawing discipline #2
in replacement of discipline #1) ? 
thank you,
François
The latter is fine.