X-Pro2 does not have a "shoot without lens" setting?

Just received the X pro 2 today. I wanted to try it with a Leica 28mm I already have and third party adapter that I have been using on the X T1. I can't find a " shoot without lens " setting choice in the menu like the X t1 has. It does have a "mount adapter setting", but I fear its for the Fuji brand adapter only. Any body else have another idea?
Thats
Markie