On a UISplitViewController initialised with a .doubleColumn, from the primaryVC you can change what's displayed on the secondary column with a simple showDetailViewController(vc, sender: self) However, even changing the SplitVC to a triple column, this behaviour seems to be kept: meaning that it still pushes the passed VC to the .secondary column instead of the .supplementary This seems pretty simple to achieve subclassing UISplitViewController and overriding showDetailViewController but I wanted to see if there's anything out of the box that would work like this Thanks!