Depth of Field in 4.25

Hello every one,
I want to use the DOF setting in a regular or cinematic camera on ue4.25. None of the new Depth of Field settings seems to do anything in them. Somebody tell me how to use DOF in 4.25?

I did my DOF blur using post-process material. You can see it in the link below.

On your player bprint Camera options, set
Camera->Aperture (F-stop) 1.2 or 1.25
Depth of Field->Focal Distance 60