transfer user from old computer to be a second user on a new computer
I would like to transfer my wife's user account, currently on a MacBook Pro (13 inch, mid 2012), running OS X Yosemite (10.10.5), TO my newer MacBook Pro (Retina, 13 inch, Early 2015), running OS X El Capitan (10.11.6) as a separate user account. I only have one user account on my newer Retina MacBook, and would like to have her as a user on this newer MacBook instead of alone on her old (slow) MacBook. How can I do this?
OS X Yosemite (10.10.4)