Join Date: Apr 2006
Location: Los Angeles, California
Programs: United LT-GS, AA LT-Plat, Hyatt LT-Globalist, Hilton LT-Diamond, Marriott LT-Titanium, Hertz PC
Posts: 15,628
Welcome to FT!
If you mean may one person use miles in his or her account to upgrade a companion, I have done that a few times.