In the character BP click add component and type “Post Process” if you want to be able to toggle the effects set its blend weight to 0 in the details panel and it will start off … then when you want to toggle them on set the blend weight to 1:
Hello,
First of all: I’m a complete beginner.
So please keep your answer understandable for newbies 
Now to the problem: I tried to get a PPV following the player to achieve a darker mood, when it rains.
I got a rain sphere following the player and changed the roughness of the ground gradually, but I can’t find a way to add PPV’s to the blueprint.
I searched this forum and tried to solve the problem with Matinee, but I failed at adding the Matinee to the blueprint event as well.
Thank you very much!
Thank you very much!
I’m sure I checked the components… I feel stupid now, but
thank you a lot!
No problem, don’t forget to mark this as resolved/answered.