Just to complete what RazorNF started...
The person you are pushing to will then recieve an email. They will log into their account and click "account changes". In the top right hand side there is a button that says "Accept Account Change" they will then enter in the Transaction ID and Security code that is provided in the email...
Theyll process through, checkout and add a payment method to the domain name. Once this is completed. the domain will be in the account within a matter of moments.