Originally Posted by
wolfee48 Because of the reported issues with Outlook Mail app and calendar, I'm sure they have to work those kinks out first in order for quiet hours to work properly. When I first jumped on the latest preview, you could link your mailboxes... but they pulled that because of issues. So am I waiting for that to come back as well as quiet hours. In due time... patience with preview builds.
Not linked. Quiet hours is managed by Cortana, and she's catching up *very* slowly with her 8.1 level. To be fair, she has features we didn't have in 8.1
But for instance, until previous build (10581), you couldn't edit a reminder! Just to changed the title, date or hour --> you could only terminate/delete it! Now we can edit.
So I guess someday quiet hours associated to busy periods will come back, I hope sooner than later, because I used to use it a lot at office :/