The subject line pretty much covers it. I have a 12 hour work day and it repeats for 7 days every other week. A 7 on 7 off 12 hour work day. So I am trying to set a calendar event to reflect. I can easily do it if it was a "All Day" event so I am trying trying to find a solution for a 12 hour day without having to create multiple events.
OWA has limited selection when it comes to creating recurring events, so I dont think you will be able to do it with only one. Should be fairly straightforward in Outlook though, where you can select each day of week you're interested in, set the recurrence to weekly and select the "recur every 2 weeks" option.