How can I display Ps4 keys in the game (PC / Steam)?

I recently bought a chubby party on Steam. Now I'm looking for how I can display the Ps4 keys in the game and no longer the Xbox keys. This can be very irritating when playing. I have connected a Ps4 controller. At Rocket league I managed to change this, but I don't remember how I did it because it was a long time ago. I mean that I did it on Steam or BigPicture mode and not in the Rocket league game myself.

In the Steam settings there's the option 'Controller settings' there you can set your controller with the desktop button assignment as you like it best.

That does not help. There you can't set whether a circle or a B should now be displayed.