OMG! During Prerelease I have been asking to have all panels present in the Window menu, and that is the case for the Win version, this is the first time I see the Mac version. I'm very sorry... maybe a Mac user (still minority I believe) could help you. Or someone form the staff maybe?
There are no workspaces anymore in Newbie mode, everything is fixed and the term Classic is even obsolete, has no sense; you can only reset to Classic but that will only hide the Timeline and Properties - or Library panel again. On my screenshot you could see that I changed workspace, I recreated most of the workspaces available in previous versions because they are time savers for me. To turn on Expert mode (not sure about Mac version ...), go into Preferences, check the 4th option in General settings. But, since you don't see the Timing Properties in the Window menu... you'll have to search a little bit.
