How to use Film settings? (Post Processing)

I’m relatively new to Unreal Engine, and have been creating my first Unreal Tournament 4 DM map with it. (The editor anyway) I’m trying to finish up my level with some artsy stuff like post processing, but I cannot get the film tint to change no matter what I change. I have tried disabling all forms of light to see if they were conflicting and so far I haven’t found anything. I can use Scene Color Tint, but that is not what I want to use for what I am doing. Nothing works withing the Film tab.

Any help would be appreciated! I have been frustrated all morning trying to find solutions.