How do you set your HMD to always orient in one direction on startup?

I have a Quest 2 in an Unreal project that is supposed to basically be pointing towards a wall when a user mounts the HMD, regardless of what direction he is facing. In other words, when the user pits on the HMD, he will always be looking at the wall and of course turn around from there. My pawn blueprint currently only has the Set Tracking Origin. What should I do to tell the HMD to always point in the direction of my wall on start up?