Create Ring account, install, setup all Cameras

How can I install and setup an account for a homeowner that is not present and do not have access to his phone or email, is it possible to setup an account using my email which i already a ring account (without goofing up my account) then the homeowner can switch it to his. Not doing shared access Or can I setup cameras, connect them to the houses wifi, allow updates , create an account using their email? Or would the 2 step authentication block me from doing such ? How does an installer setup cameras and account when the owner is not present? Then the owner takes over logs in and is good to go,