Change my FB Pixel via Screenshare

I want someone that can help show me how to change my FB pixel via a Zoom or other screenshare. Right now it seems to be stuck on a old pixel connected to another site, maybe I don't understand how to run traffic to multiple sites with multiple pixels at a time.

I already have a pixel working and firing off but when i create new ads it is already loading up a different pixel than the one i want.

Speed will be favored over anything if you can hop on line with me right now.