First if you buy a CD instead of a download and one of the computers you want to use doesn't have a CD drive and is the other OS then you should ONLY download the program for both OR use the CD for both (get a cheap external CD drive) OR save the installation file from the CD to a thumb drive and transfer it to the no CD computer.
Up to this year all you had to do is ask for the other OS download but this year TT seems to be pushing back which is not right ... I agree, insist nicely and don't take no for an answer.
