Step 2: Add Your Business Page(s)
You can choose to create a new Facebook business page or add one that already exists in this step. It is also possible to request access to another page if you’re in charge of managing pages for other businesses. You can add your own Facebook page to the platform by clicking Add Page and then click Add Page again in the pop-up box.
Enter the name of your Facebook business page within the text box. This area should automatically complete itself, and you should click the appropriate page. If you have administrator access to the page that you wish to add, the request is going to be automatically approved.