The answer on
Change detail view from MasterDetail iPad app using storyboard
seems to be what I'm looking for except that I'm having trouble understanding and configuring the additional Navigational Controllers that are generated from the IPad Master-Detail template in XCode.
The initial Controller is a Split View then that contains two Navigational Controllers, one each for their contained Master View Controller and Detail View Controller respectively. Still going through the learning curve here, but my understanding from my reading was that one Navigational Controller controls both the Master and any pushed down Detail Views.
Following the instructions in the earlier question I'm able to drag on a second detail View Controller connected with a replace seque from my second static Table View cell but I can't (and don't know whether I should) also associate it with a Navigational Controller. If I select this new View Controller and Embed In/Navigational Controller then another Navigational Controller is generated off the Split View to the new View Controller (and it doesn't work when run).
Thanks