You cannot have more than one "operational contact". The operational contact's sole purpose is to receive the first access codes to your company's partner extranet.
As soon as they log on for the first time, the operational contact can add the members they wish directly from your company's partner extranet in the "Manage Your Team" module.
Please note that anyone added to "Manage Your Team" receives digital rights, not physical ones. If you also wish to invite your members to the physical VivaTech event, you must send them an invitation in the "Send My Invitations" module.