Start From The Facebook Homepage On Your Left
Once there you will see all of your pixels, which websites they are connected to, and their events. You can also easily see the Pixel ID if that is what you need
However, in this tutorial, we are looking for that little code snippet that you will need so that you can add the Pixel to a website. To find it, you need to select Add a New Event from a New Website.
Then choose to add the event manually
Now you can copy the code snippet and insert it into the website you want to link it to.
You can use this code to install your pixel in a new website, on multiple websites, or to finish the installation process if you had to stop in the middle.