10 or 11 stepgen

How can I use 10 or 11 stepgen with mesa? What cards to be used?

A 7I96S + 7I88 would give you 12 or 13 stepgen outputs (depending
on whether you use the 7I88 as 7 stepgens+ RS-485 or 8 stepgens)

A 7I96S+ a common Mach 5 axis BOB (5ABOB) would give you 10

Well, I have attached the brochure for 5 axis BOB.

I have used such board earlier.

Now, can I use it through a parallel port of the computer for stepgen while having Mesa 7i92+daughter cards ?

Yes.

You can run that card from a 7I92,7I92T,7I96,7I96S etc also