No need to be confused, Zeiss used the Z label on their lenses long before Nikon had a Z mount. The ZF.2 is electronically chipped like any other Nikon lens so fully communicates with your Nikon bodies (older lenses were called ZF lenses and weren't chipped, and as I said in my earlier post the Canon Lenses are called ZE lenses)
By default, you set the aperture at its smallest value (f16 or f22, or f32 depending on the lens) and then use the same dials on the camera to adjust the aperture as you would with any other lens. All the communications between the lens and the camera are via the electronic contacts.
"If" you want to set the aperture on the lens directly you can set this up in the menu, but I can't remember how, and haven't bothered. I did once upon a time, but found it easier to just leave the lenses at their smallest aperture and use the dial on the camera.