How to make many p12 certificates for wallet cards in 1 dev acc?

Hi everyone, i am developing wallet cards service for retail and encountered difficulties that i can use only one certificate for client, i am wondering if i am going to do that service i need many p12 to issue wallet cards for every client, but individual acc lets issue only 1 p12 for 1 wallet card, if i make enterprise acc will it let issue p12 certificate for each of my wallet card client?

How to make many p12 certificates for wallet cards in 1 dev acc?
 
 
Q