HELP I would like a button that leverage the AAA graphics

I EXPECT FOR MY ENGLISH, BUT I AM USING GOOGLE TRANSLATOR

hi I'm creating a multiplayer game I put the graphics AAA, among these I put the component PostProcessingBehaviour, on the UI menu I made, on the graphics settings, I would like with a button to disable all the components that I put on the camera to make the graphics AAA , for less powerful PCs, so they can play all, to give me an example even to disable the PostProcessingBehaviour via a UI button, then I tried to use onclick, put the camera and put on the "bool enable" works but the game is online , and then it does not work, but if it was offline my problem was solved enough to use the button ui, but with the online I can not of course, what script I could use, the script will have to put on the UI button and disable the script component in this PostProcessingBehaviour case, how can I do? do you recommend a script? I have little experience and I'm learning, I would need this thing, thanks in advance

IN SHORT WORDS

I would like to know a script that disables the PostProcessingBehaviour component or script from the "camera" object

use language c#