To create a new pixel for facebook, you will need to have admin rights in your Business Manager account.
If you do have the rights, you will need to go to Campagin Settings in Business Manager
If there are more then one campaign in your account - select the one you need.Install app for free
After that you will have to select 'Data Sources' in the menu to the left.Install app for free
In the opened section you can see all the created pixels, and you can create new one
To make a new pixel you will need to click on the 'Add' buttonInstall app for free
In the new window you will need to select the name of the pixel.
You also may fill in the URL of the site, which will use this exact pixel (but this is optional).Install app for free
When you have finished filling in pixel name field with or without site's URL, click 'Continue'Install app for free
After this Facebook will suggest you to install the Pixel on your site, or return to campaign managementInstall app for free
To send and install Facebook Pixel on your site - open your pixel by clicking on 'Open in Events Manager'Install app for free
Click on the 'Install pixel' button in the dropdown list, and select one of the options of pixel installation.Install app for free
After this, the only thing left for you to do is to install the pixel's code on your site according to Facebook's reccomendation.Install app for free