Cisco MDS9214 NPIV with the HP Blade

I work for an EMC disti and have a customer who has purchases a Cisco MDS9124 Switch.

They have a HP Blade System its attaching to, but cannot see how to access the N-ports on the individual blade servers inside the blade chassis, only the 2 front end ports.

I know you need to enable the NPIV licence on SAN-OS, which has been done, but how do they manage the V-san and Zone to the blades inside the chassis ?