How do I make Grain Show in editor?

I am making my game take place at night but need a way for the player to find his way around, so I came up with the Idea of having Night Vision. So i get the Post Process Volume Ready with the Color tint I like and the Blueprints set up for toggling it wit a power percentage, then I find out how to add grain, but I cant see the grain until I play it in a packaged version or I play as stand alone game. I have messed with some settings and none seem to work, Any thing you as the community can do to help solve this?

~Thanks in advance!

HI!

In these videos you can see how you can create Night Vision with adjustable Exposure and Grain Effect.

I think it helps you.

I know how to make Night vision, the thing is that the grain wont show up in the editor, I have to “play as stand alone game” or export it.