How to set OVR camera height for stationary boundary in Unity?

In my game the player should play sitting with a stationary boundary. But now the player's eyes are pretty much on the ground, which is not what I want. I want the player to be 1.8f tall. It worked before with OpenXR, but yesterday I added Oculus Integration, because I need some Oculus specific features, so I exchange the OpenXR Rig for the OVR Camera Prefab. Almost all I got working like in OpenXR, unlike the camera height.