Multiple Apple IDs on one Mac
I have 2 different user accounts on my MacBook Air. Both users have their own iTunes Library with their own AppleID.
Is my understanding correct that it is not possible to use both accounts independently as only one Apple ID can "use" the Mac at a time ?
Furthermore, if user A has its Apple ID associated to the Mac, user B is unable to use iTunes Match on the same Mac for it's account (at least not for another 90 days) ?
Thx in advance for any solution allowing user A and B to share one Mac (including iTunes) as if it was two physically seperate computers. The goal for me would be to have 1 Mac used by 2 users (each one having it's own account) with 2 Apple IDs (ID 1 for user A - ID 2 for user B).
OS X Mountain Lion (10.8.2)