Well,

RX7640 is a cell based server. Be more cautious while playing with it and I believe the setup's gonna be high. I'm sure that you've got a support contract with HP. I also believe, configuring MCSG does not work that way with that. It's all like break fix. But, yes, you can do it with a Consulting. (I believe you can get what am trying to say)

So, Hmmm RX7640. Either its gonna be a couple of RX7640's or a one RX7640 with MCSG on different Npars or, on top of Vpars on same npar (Not recommended unless you use it a testing environment or for your lab activity) or different. There'd be slight modifications in the setup. However, everything looks and most work similar.

Go to the below link, get the document for your OS version and SG version. Read it and master it.

HP-UX 11i v2 Operating Environments

You'd have step by step procedure and explanations on docs. (Best way)

Hint: If you can, please do practice on a test environment before implementing it on your RX7640. Or, create a couple of vpars and try setting it up on it. Then, you can bring them down and start over with your original setup. If you can!

All the best!

-DB