attempting to transfer a domain from Wix.com to my Homestead account..

I'm  attempting to transfer a domain from Wix.com to my Homestead account..  I'm at the point where its asking to unlock my domain.  I received the code to unlock in my email but I'm not sure what to do with it.  It says" Copy this code into the required field with your new registrar, and your domain transfer will be completed. " But I dont see where in Homestead I'm supposed to input this code.  Help please...