How set game to Seated Experience?

I've been adding VR support to my game, and I've been using the Recenter function in UnityEngine.VR but it only works with my oculus, and not with the vive since that is set up for room scale. Is there anyway I can set the project to be a seated experience so the recenter works for the vive. Or anyway that I can read that my user has their vive in Room Scale mode?