Originally Posted by
Hannibal Lecter
As far as I understand, and also from experience, the reservation will be in the name of the person who owns the PC number, if you add a PC number, or change it, the name will also change. Your friend could just have given them the number when he checked out and told them that it's the "the person I've been staying with here"
I kind of doubt if the name will be changed automatically to the name of the person who owns the PC number. Once in a while I could see online (after log in) at ihg.com some reservations that doesn't belong to me and not under my name neither(I didn't make those reservations), and I suspect those who made the reservation or hotel front desk mistakenly input my PC number as theirs.