Currenlty, access is shared via login. 

 You can simply provide the co-registrant with your current log-in credentials, and they will be able to log into the MyRegistry app or via desktop. Please keep in mind that both registrants cannot use the same platform to access the registry at the same time. If you are using the app, your partner will have to access the account on a desktop and vice versa in order to manage the registry simultaneously.