I want to buy a version of microsoft office for mac but can't seem to find an answer to which version to buy for the account to be open in mac and in windows through parallels. If I buy the non subscription license (one time purchase), will I be able to use office in mac and in windows through parallels? If not, will I need to buy a 365 subscription and which one? Will I be able to use the single user purchase or the multi user purchase?